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Array Essentials Version 2.0: This version ads a few new functions and removes functions made relatively redundant with eta-reduced-formats.
/* Array Essentials V2 - A collection of basic array 5g Functions
This version trims the previous collection of 5g functions made redundant by eta-reduced syntax.*/
/* FUNCTION NAME: Aboutλ
DESCRIPTION:*//**Displays the URL to this module's Gist which includes documentation*/
/* REVISIONS: Date Developer Description
Nov 29 2024 Craig Hatmaker Copyright
Mar 11 2025 Craig Hatmaker General updates
Mar 15 2025 Craig Hatmaker See MLookupλ, XYLookupλ
Mar 24 2025 Craig Hatmaker See DAF versions of common Excel functions
May 15 2025 Craig Hatmaker See AndAλ, AvgAλ, MaxAλ, MinAλ, OrAλ, and SumAλ
Sep 25 2025 Craig Hatmaker Added OnChangeλ, OnChangeCountλ, and OnChangeResetλ
Oct 06 2025 Craig Hatmaker Added Row and Column aware suite of functions
Oct 08 2025 Craig Hatmaker Added web addresses on some functions
Nov 07 2025 Craig Hatmaker Major updates
*/
Aboutλ = TRIM(TEXTSPLIT(
"About: →Basic functions for working with dynamic arrays. Suggested module name: BXE¶" &
"Version: →BXL: Nov 04 2025¶" &
"Gist URL: →https://gist.github.com/CHatmaker/d0829c4bde303f5f8602c21158831323 ¶" &
"Website: →https://sites.google.com/site/beyondexcel/home/excel-library/ ¶" &
"→¶" &
"Function →Description¶" &
" Aboutλ →Produces this table¶" &
" Instanceλ →Determine each value's instance within an array.¶" &
" IsBetweenλ →Determine if a value is between a lower and upper limit.¶" &
" IsInListλ →Determine if a value is one of a list of items.¶" &
" Offsetλ →A version of OFFSET that works with arrays internally and is not volitile.¶" &
" RangeToDAλ →Convert a range reference to a dynamic array reference¶" &
"→¶" &
"Array basics→¶" &
" GetDiagonalsλ →List array's values in diagonals going from up left to down right starting in top right corner¶" &
" FlipArrayλ →Flip array vertically or horizontally¶" &
" RotateArrayλ →Rotate array clockwise or counter clockwise¶" &
"→¶" &
"Array Lookups & Filters→Lookup functions we wish Excel had¶" &
" FilterContainsλ →Filter an array by another array that contains specifice text¶" &
" BYCOLContainsλ →Applies a function to each column of a Values array filterd by a Labels array containing specified text¶" &
" MLookupλ →Find values matching up to 4 criteria in 1 to 4 rows or columns (but not both).¶" &
" XYLookupλ →Find values matching 1+ criteria in a column, and 1+ in a header.¶" &
"→¶" &
"Multi Lookups →Return arrays that exactly matches up to 4 criteria¶" &
" ListMLλ →List values from an array based on 4 or fewer exact match criteria (helper function)¶" &
" AvgMLλ →Average an array based on 4 or fewer exact match criteria¶" &
" CountMLλ →Average an array based on 4 or fewer exact match criteria¶" &
" MaxMLλ →Average an array based on 4 or fewer exact match criteria¶" &
" MinMLλ →Average an array based on 4 or fewer exact match criteria¶" &
" SumMLλ →Average an array based on 4 or fewer exact match criteria¶" &
"→¶" &
"Array Versions →Array friendly versions of Excel's *IFS functions¶" &
" Compareλ →Determine if a value or array meets a criteria. This is the *Ifs core engine.¶" &
" ListIfsAλ →List values from an array that match up to 4 criteria (helper function)¶" &
" AvgIfsAλ →An array friendly version of AVERAGEIFS()¶" &
" CountIfsAλ →An array friendly version of COUNTIFS()¶" &
" MaxIfsAλ →An array friendly version of MAXIFS()¶" &
" MinIfsAλ →An array friendly version of MINIFS()¶" &
" SumIfsAλ →An array friendly version of SUMIFS()¶" &
"→¶" &
"Array position Aware→A collection of functions applied by row or column based on the function's¶" &
"→ position relative to the array (if in the grid)¶" &
" ProcessAλ →A helper function for processing all columns or rows based on this function's position relative to an array¶" &
" AndAλ →AND an array by column or by row based on the function's position relative to the array (if in the grid)¶" &
" AvgAλ →AVERAGE an array by column or by row based on the function's position relative to the array (if in the grid)¶" &
" MaxAλ →MAX an array by column or by row based on the function's position relative to the array (if in the grid)¶" &
" MinAλ →MIN an array by column or by row based on the function's position relative to the array (if in the grid)¶" &
" OrAλ →OR an array by column or by row based on the function's position relative to the array (if in the grid)¶" &
" SumAλ →SUM an array by column or by row based on the function's position relative to the array (if in the grid)¶" &
"→ to the array (if in the grid)¶" &
"→¶" &
"Array Row Aware →A collection of functions that apply themselves to an array's row that they share¶" &
" ProcessRCλ →A helper function for processing a column or row based on this function's position relative to an array¶" &
" AndRCλ →AND an array's row that this function shares.¶" &
" AvgRCλ →AVERAGE an array's row that this function shares.¶" &
" MaxRCλ →MAX an array's row that this function shares.¶" &
" MinRCλ →MIN an array's row that this function shares.¶" &
" OrRCλ →OR an array's row that this function shares.¶" &
" SumRCλ →SUM an array's row that this function shares.¶" &
"→¶" &
"On Change Suite →Functions that respond to changes in sequences.¶" &
" OnChangeλ →Indicate an array change with a flag (1)¶" &
" OnChangeCountλ →Increment a counter when an array changes¶" &
" OnChangeResetλ →Reset a counter when an array changes¶" &
"→¶" &
"Running totals →Functions create cummulative totals.¶" &
" RunTotColsλ →Create a running total for values in each column¶" &
" RunTotRowsλ →Create a running total for values in each row¶" &
"→¶" &
"Rolling Suite →Functions that apply to a window over an array.¶" &
" Rollingλ →Roll window over a values and apply a function to it¶" &
" RollAvgλ →Rolling AVERAGE. Same as Rollingλ( Array, , , , AVERAGE)¶" &
" RollMaxλ →Rolling MAX. Same as Rollingλ( Array, , , , MAX)¶" &
" RollMinλ →Rolling MIN. Same as Rollingλ( Array, , , , MIN)¶" &
" RollSumλ →Rolling SUM. Same as Rollingλ( Array)",
"→","¶"
)
);
/* FUNCTION NAME: Instanceλ
DESCRIPTION:*//**Determine each value's instance within an array*/
/* REVISIONS: Date Developer Description
Nov 29 2024 Craig Hatmaker Copyright
May 27 2025 Craig Hatmaker Prep for Pro Pack
*/
Instanceλ = LAMBDA(
// Parameter Declarations
[Values],
// Help
LET(Help, TRIM(TEXTSPLIT(
"FUNCTION: →Instanceλ( Values)¶" &
"DESCRIPTION: →Determine each value's instance within an array¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-instance%CE%BB¶" &
"VERSION: →BXL: May 27 2025¶" &
"PARAMETERS: →¶" &
" Values →(Required) A row or column of values.",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, ISOMITTED( Values),
Result, IF( Help?,
Help,
LET(
// Procedure
Elements, COUNTA( Values),
Counter, IF( ROWS( Values) > 1, SEQUENCE( Elements), SEQUENCE( , Elements)),
Result, MAP( Values, Counter,
LAMBDA( Val, n,
SUM(( Val = Values) * (Counter <= n)))),
Result
)
),
Result
)
);
/* FUNCTION NAME: IsBetweenλ
DESCRIPTION:*//**Determine if a value is between a lower and upper limit*/
/* REVISIONS: Date Developer Description
Jun 01 2022 Craig Hatmaker Copyright
May 27 2025 Craig Hatmaker Added Help
*/
IsBetweenλ = LAMBDA(
// Parameter Declarations
[Values],
[Low],
[High],
[Inclusive],
// Help
LET(
Help, TRIM( TEXTSPLIT(
"FUNCTION: →IsBetweenλ(Values, Low, High, [Inclusive])¶" &
"DESCRIPTION: →Determine if a value is between a lower and upper limit.¶" &
"WEBSITE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→5g-sample-components/5g-isbetween%CE%BB ¶" &
"VERSION: →BXL: May 27 2025¶" &
"PARAMETERS: →¶" &
" Values →(Required) One or more values to compare.¶" &
" Low →(Required) The lower limit that the value(s) must be greater than¶" &
" High →(Required) The higher limit that the value(s) must be less than¶" &
" Inclusive →(Optional) TRUE: Value(s) can be equal to Low and/or High (default)",
"→", "¶"
)
),
// Check inputs - Set optional arguments defaults
Inclusive, IF(ISLOGICAL(Inclusive), Inclusive, TRUE),
// Check inputs - Omitted required arguments
Help?, OR(
ISOMITTED(Values),
ISOMITTED(Low),
ISOMITTED(High)
),
Result, IF( Help?,
Help,
LET(
// Procedure
Result, IF( Inclusive,
(Values >= Low) * (Values <= High) = 1,
(Values > Low) * (Values < High) = 1
),
Result
)
),
Result
)
);
/* FUNCTION NAME: IsInListλ
DESCRIPTION:*//**Determine if a value is between a lower and upper limit*/
/* REVISIONS: Date Developer Description
Jun 18 2023 Craig Hatmaker Copyright
Feb 28 2024 Craig Hatmaker Updated to new standards
May 26 2025 Craig Hatmaker Pro Pack Prep
*/
IsInListλ = LAMBDA(
// Parameter Declarations
[Value],
[LIST],
// Help
LET(Help, TRIM(TEXTSPLIT(
"FUNCTION: →IsInListλ( Value, List)¶" &
"DESCRIPTION: →Determine if a value is one of a list of items.¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-isinlist%CE%BB¶" &
"VERSION: →BXL: May 26 2025¶" &
"PARAMETERS: →¶" &
" Value →(Required) A value or array of values to compare.¶" &
" List →(Required) A list of values to check.",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, OR( ISOMITTED( Value),
ISOMITTED( LIST)
),
Result, IF( Help?,
Help,
LET(
// Procedure
Result, NOT( ISNA( MATCH( Value, List, 0))),
Result
)
),
Result
)
);
/* FUNCTION NAME: Offsetλ
DESCRIPTION:*//**A version of OFFSET that works with arrays Internally and is not volitile*/
/* REVISIONS: Date Developer Description
Aug 26 2025 Craig Hatmaker Copyright
*/
Offsetλ = LAMBDA(
// Parameter Declarations
[Array],
[Rows],
[Cols],
[Height],
[Width],
LET(
// Help
Help, TRIM(TEXTSPLIT(
"FUNCTION: →Offsetλ(Array, [Rows], [Cols], [Height], [Width])¶" &
"DESCRIPTION: →A version of OFFSET that works with arrays internally and is not volitile¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→5g-component-libraries/5g-array-essentials-library/???¶" &
"VERSION: →BXL: Aug 25 2025¶" &
"PARAMETERS: →¶" &
" Array →(Required) The array or reference from which you want to base the offset. ¶" &
" Rows →(Optional) The number of rows down (+), relative to Array's first element that ¶" &
"→ you want offset to get values from. Default = 0.¶" &
" Cols →(Optional) The number of columns, right relative to Array's first element that ¶" &
"→ you want offset to get values from. Default = 0.¶" &
" Height →(Optional) The number of rows that you want the returned values to be.¶" &
"→ Height must be a positive number. Default = 1.¶" &
" Width →(Optional) The number of columns that you want the returned values to be.¶" &
"→ Width must be a positive number. Default = 1",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, ISOMITTED( Array),
Result, IF( Help?,
Help,
LET(
// Check inputs - Set optional arguments' defaults
Rows, IF( ISOMITTED( Rows), 0, Rows),
Cols, IF( ISOMITTED( Cols), 0, Cols),
Height, IF( ISOMITTED( Height), 1, Height),
Width, IF( ISOMITTED( Width), 1, Width),
// Procedure
TakeRows, CHOOSEROWS( Array, SEQUENCE( Height, , Rows + 1)),
TakeCols, CHOOSECOLS( TakeRows, SEQUENCE( Width, , Cols + 1)),
Result, TakeCols,
Result
)
),
Result
)
);
/* FUNCTION NAME: RangeToDAλ
DESCRIPTION:*//**Convert a range reference to a dynamic array reference*/
/* REVISIONS: Date Developer Description
Aug 19,2023 Craig Hatmaker Copyright
May 27 2025 Craig Hatmaker Pro Pack Prep
*/
RangeToDAλ = LAMBDA(
// Parameter Declarations
[Range],
[Rows],
[Columns],
LET(
// Help
Help, TRIM(TEXTSPLIT(
"FUNCTION: →RangeToDAλ(Range, [Rows], [Columns])¶" &
"DESCRIPTION: →Convert a range reference to a dynamic array reference.¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-rangetoda%CE%BB¶" &
"VERSION: →BXL: May 27 2025¶" &
"PARAMETERS: →¶" &
" Range →(Required) A reference to the range to be converted.¶" &
" Rows →(Optional) Number of rows for the dynamic array. Defaults to 1.¶" &
" Columns →(Optional) Number of columns for the dynamic array. Defaults to 1.",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, ISOMITTED( Range),
Result, IF( Help?,
Help,
LET(
// Check inputs - Set optional arguments' defaults
Rows, IF( ISNUMBER( Rows), Rows, 1),
Columns, IF( ISNUMBER( Columns), Columns, 1),
// Procedure
Result, OFFSET( Range, 0, 0, Rows, Columns),
Result
)
),
Result
)
);
// Array basics
/* FUNCTION NAME: GetDiagonalsλ
DESCRIPTION:*/
/**List Array diagonals. Direction depends on Direction and Reverse.
Dir.,Rev.: Result
1, FALSE: ↙, start top left, across then down
-1, FALSE: ↘, start top right, across then down
1, TRUE:  ↗, start top left, down then across
-1, TRUE:  ↖, start top right, down then across
*/
/* REVISIONS: Date Developer Description
Aug 13 2025 Craig Hatmaker Copyright
*/
GetDiagonalsλ = LAMBDA(
[Array],
[Direction],
[Reverse],
LET(
// Help
Help, TRIM(TEXTSPLIT(
"FUNCTION: →GetDiagonalsλ( Array, [Direction], [Reverse])¶" &
"DESCRIPTION: →List Array diagonals. Direction depends on optional arguments:¶" &
"→Dir.,Rev.: Result¶" &
"→1, FALSE: ↙, start top left, across then down¶" &
"→-1,FALSE: ↘, start top right, across then down¶" &
"→1, TRUE: ↗, start top left, down then across¶" &
"→-1,TRUE: ↖, start top right, down then across¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-getdiagonals%CE%BB ¶" &
"VERSION: →BXL: Aug 13 2025¶" &
"PARAMETERS: →¶" &
" Array →(Required) Array to list values in diagonals.¶" &
" Direction →(Optional) Diagonal direction. Defaut=1. See DESCRIPTION:¶" &
" Reverse →(Optional) Reverse results. Default=FALSE, See DESCRIPTION:.",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, ISOMITTED( Array),
Result, IF( Help?,
Help,
LET(
// Set Defaults
Direction, IF( ISOMITTED( Direction), 1, Direction),
Reverse, IF( ISOMITTED( Reverse), FALSE, Reverse),
// Define reverse CSV function
fnRevCSV, LAMBDA( Text,
LET(
Values, TEXTSPLIT( Text, ","),
Count, COLUMNS( Values),
Reverse, INDEX( Values, 1, SEQUENCE( Count, ,Count, -1)),
Result, TEXTJOIN( ",", ,Reverse),
Result
)
),
// Procedure
RowNums, SEQUENCE( ROWS( Array)),
ColNums, SEQUENCE( , Columns( Array)),
Diagonals, RowNums + Direction * ColNums,
Group, GROUPBY(
TOCOL( Diagonals),
TOCOL( Array),
ARRAYTOTEXT , , 0
),
Column2, DROP( Group, , 1),
CSV, IF( Reverse,
MAP( Column2, fnRevCSV),
Column2
) & ";",
Result, IFNA( DROP( TEXTSPLIT( CONCAT(CSV), ",", ";"),-1), ""),
Result
)
),
Result
)
);
/* FUNCTION NAME: FlipArrayλ
DESCRIPTION:*//**Flip array*/
/* REVISIONS: Date Developer Description
Aug 14 2025 Craig Hatmaker Copyright
*/
FlipArrayλ = LAMBDA(
// Parameter Declarations
[Array],
[Vertically?],
LET(
// Help
Help, TRIM(TEXTSPLIT(
"FUNCTION: →FlipArrayλ( Array, [Vertically])¶" &
"DESCRIPTION: →Flip array vertically or horizontally¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-fliparray%CE%BB¶" &
"VERSION: →BXL: Aug 13 2025¶" &
"PARAMETERS: →¶" &
" Array →(Required) Array to flip.¶" &
" Vertically? →(Optional) TRUE=flip vertically. FALSE=Horizontally.¶" &
"→Default=TRUE.",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, ISOMITTED( Array),
Result, IF( Help?,
Help,
LET(
// Set Defaults
Vertically?,IF( ISOMITTED( Vertically?), TRUE, Vertically?),
// Procedure
Rows, ROWS( Array),
Cols, COLUMNS( Array),
Result, IF( Vertically?,
VSTACK( CHOOSEROWS( Array, SEQUENCE( Rows, , Rows, -1))),
HSTACK( CHOOSECOLS( Array, SEQUENCE( Cols, , Cols, -1)))
),
Result
)
),
Result
)
);
/* FUNCTION NAME: RotateArrayλ
DESCRIPTION:*//**Rotate array*/
/* REVISIONS: Date Developer Description
Aug 12 2025 Craig Hatmaker Copyright
*/
RotateArrayλ = LAMBDA(
// Parameter Declarations
[Array],
[Clockwise?],
LET(
// Help
Help, TRIM(TEXTSPLIT(
"FUNCTION: →RotateArrayλ( Array, [Direction])¶" &
"DESCRIPTION: →Rotate array clockwise or counter clockwise¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-rotatearray%CE%BB¶" &
"VERSION: →BXL: Aug 12 2025¶" &
"PARAMETERS: →¶" &
" Array →(Required) Array to rotate.¶" &
" Clockwise? →(Optional) TRUE=Rotate clockwise. FALSE=Counter clockwise.¶" &
"→Default=TRUE.",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, ISOMITTED( Array),
Result, IF( Help?,
Help,
LET(
// Set Defaults
Clockwise?, IF( ISOMITTED( Clockwise?), TRUE, Clockwise?),
// Procedure
Transpose, TRANSPOSE( Array),
Rows, ROWS( Transpose),
Cols, COLUMNS( Transpose),
Result, IF( Clockwise?,
HSTACK( CHOOSECOLS( Transpose, SEQUENCE( Cols, , Cols, -1))),
VSTACK( CHOOSEROWS( Transpose, SEQUENCE( Rows, , Rows, -1)))
),
Result
)
),
Result
)
);
// Array Lookups and Filters
/* FUNCTION NAME: →FilterContainsλ
DESCRIPTION:*//**→Filters a Values array by a Labels array containing specified text*/
/* REVISIONS: Date Developer Description
Feb 22 2024 Craig Hatmaker Initial development and copyright
*/
FilterContainsλ = LAMBDA(
// Parameter Declarations
[ValuesToFilter],
[ValueLabels],
[FilterByText],
[IgnoreCase?],
LET(
// Help
Help, TRIM(TEXTSPLIT(
"FUNCTION: →FilterContainsλ( ValuesToFilter, ValueLabels, FilterByText, [IgnoreCase?])¶" &
"DESCRIPTION: →Filters a Values array by a Labels array containing specified text¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-filtercontains%CE%BB¶" &
"VERSION: →BXL: Feb 22 2024¶" &
"PARAMETERS: →¶" &
" ValuesToFilter→(Required) An array of values to be filtered¶" &
" ValueLabels →(Required) An array containing the values' labels¶" &
" FilterByText →(Required) A unique letter, word or phrase to find contained¶" &
"→in ValueLabels¶" &
" IgnoreCase? →(Optional) A flag to determine if Text's case is important.¶" &
"→Default is TRUE",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, OR( ISOMITTED( ValuesToFilter),
ISOMITTED( ValueLabels),
ISOMITTED( FilterByText)),
Result, IF( Help?,
Help,
LET(
// Check inputs - Set defaults
IgnoreCase?, IF( ISLOGICAL( IgnoreCase?), IgnoreCase?, TRUE),
Labels, CHOOSECOLS(ValueLabels, 1),
// Procedure
Matches, IF( IgnoreCase?,
SEARCH( FilterByText, Labels),
FIND( FilterByText, Labels)
),
Result, FILTER( ValuesToFilter, ISNUMBER( Matches)),
)
),
Result
)
);
/* FUNCTION NAME: →BYCOLContainsλ
DESCRIPTION:*//**→Applies a function to each column of a Values array filterd by a Labels array containing specified text*/
/* REVISIONS: Date Developer Description
Feb 22 2024 Craig Hatmaker Initial development and copyright
*/
BYCOLContainsλ = LAMBDA(
// Parameter Declarations
[ValuesToFilter],
[ValueLabels],
[FilterByText],
[Function],
[IgnoreCase?],
LET(
// Help
Help, TRIM(TEXTSPLIT(
"FUNCTION: →BYCOLContainsλ( ValuesToFilter, ValueLabels, FilterByText,¶" &
"→ [Function], [IgnoreCase?])¶" &
"DESCRIPTION: →This is a helper function. It applies a function that we select or create to each¶" &
"→column in a 'values' array filtered by a 'labels' array containing specified text¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-bycolcontains%CE%BB¶" &
"VERSION: →BXL: Feb 22 2024¶" &
"PARAMETERS: →¶" &
" ValuesToFilter→(Required) An array of values to be filtered¶" &
" ValueLabels →(Required) An array containing the values' labels¶" &
" FilterByText →(Required) A unique letter, word or phrase to find contained¶" &
"→in ValueLabels¶" &
" Function →(Optiona) An Excel function or a LAMBDA function to process¶" &
"→a column of values. Default = SUM.¶" &
" IgnoreCase? →(Optional) A flag to determine if Text's case is important.¶" &
"→Default is TRUE.",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, OR( ISOMITTED( ValuesToFilter),
ISOMITTED( ValueLabels),
ISOMITTED( FilterByText)),
Result, IF( Help?,
Help,
LET(
// Check inputs - Set defaults
IgnoreCase?, IF( ISLOGICAL( IgnoreCase?), IgnoreCase?, TRUE),
Labels, CHOOSECOLS(ValueLabels, 1),
Function, IF( ISOMITTED( Function), SUM, Function),
// Procedure
Matches, IF( IgnoreCase?,
SEARCH( FilterByText, Labels),
FIND( FilterByText, Labels)
),
Filtered, FILTER( ValuesToFilter, ISNUMBER( Matches)),
Result, BYCOL( Filtered, Function),
Result
)
),
Result
)
);
/* FUNCTION NAME: MLookupλ
DESCRIPTION:*//**Multiple criteria dynamic array lookup*/
/* REVISIONS: Date Developer Description
Mar 07 2025 Craig Hatmaker Copyright
Mar 15 2025 Craig Hatmaker Fixed FindValues# to accept numbers or dates entered as strings
*/
MLookupλ = LAMBDA(
// Parameter Declarations
[ReturnArray],
[FindValues1],
[InArray1],
[FindValues2],
[InArray2],
[FindValues3],
[InArray3],
[FindValues4],
[InArray4],
// Help
LET(Help, TRIM(TEXTSPLIT(
"FUNCTION: →MLookupλ( ReturnArray, FindValues1, InArray1, [FindValues2], [InArray2],¶" &
"→  [FindValues3], [InArray3], [FindValues4], [InArray4]) ¶" &
"DESCRIPTION: →Find values matching 1+ criteria in 1 to 4 rows or columns (but not both).¶" &
"→Return #N/A if nothing found.¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-mlookup%CE%BB¶" &
"VERSION: →BXL: Mar 07 2025¶" &
"PARAMETERS: →¶" &
" ReturnArray →(Required) An array containing items to return¶" &
" FindValues1 →(Required) An array or comma separated string containing values to find in InArray1¶" &
" InArray1 →(Required) A 1 dimensional array with as many rows or columns as ReturnArray to search with FindValues1¶" &
" FindValues2 →(Optional) Same as FindValues1, but for finding in InArray2¶" &
" InArray2 →(Optional) An array of the same dimensions as InArray1, to search with FindValues2¶" &
" FindValues3 →(Optional) Same as FindValues1, but for finding in InArray3¶" &
" InArray3 →(Optional) An array of the same dimensions as InArray1, to search with FindValues3¶" &
" FindValues4 →(Optional) Same as FindValues1, but for finding in InArray4¶" &
" InArray4 →(Optional) An array of the same dimensions as InArray1, to search with FindValues4",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, OR( ISOMITTED( ReturnArray),
OR( ISOMITTED( FindValues1), FindValues1=""),
OR( ISOMITTED( InArray1), InArray1="")
),
Result, IF( Help?,
Help,
LET(
// This function attempts to convert FindValues# to an appropriate Matches# argument
FixFindValues, LAMBDA( FindValues,
IF( OR( ISOMITTED(FindValues), LEN( TRIM( FindValues)) = 0),
{""},
IF( COUNTA( FindValues) = 1,
LET(
Values, TRIM( TEXTSPLIT( FindValues, ",")),
IFERROR( VALUE( Values), Values)),
FindValues)
)
),
FindValues1, FixFindValues(FindValues1),
FindValues2, FixFindValues(FindValues2),
FindValues3, FixFindValues(FindValues3),
FindValues4, FixFindValues(FindValues4),
// This function attempts to convert InArray# to an appropriate Matches# argument
FixInArray, LAMBDA( InArray, FindValues,
IF( OR( ISOMITTED( InArray), LEN( TRIM( FindValues)) = 0),
{""},
InArray)
),
// IF InArray# or FindValues# are not an array, use {""}
InArray1, FixInArray( InArray1, FindValues1),
InArray2, FixInArray( InArray2, FindValues2),
InArray3, FixInArray( InArray3, FindValues3),
InArray4, FixInArray( InArray4, FindValues4),
// Determine Matches
Matches1, ISNUMBER( MATCH( InArray1, FindValues1, 0)),
Matches2, ISNUMBER( MATCH( InArray2, FindValues2, 0)),
Matches3, ISNUMBER( MATCH( InArray3, FindValues3, 0)),
Matches4, ISNUMBER( MATCH( InArray4, FindValues4, 0)),
// Set Filter
Filter, Matches1 * Matches2 * Matches3 * Matches4,
// Filter
Result, IF( SUM( Filter) > 0, FILTER( ReturnArray, Filter), #N/A),
Result
)
),
Result
)
);
/* FUNCTION NAME: XYLookupλ
DESCRIPTION:*//**2-way dynamic array lookup*/
/* REVISIONS: Date Developer Description
Mar 15 2025 Craig Hatmaker Copyright
*/
XYLookupλ=LAMBDA(
// Parameter Declarations
[ReturnArray],
[VFindValues],
[VInArray],
[HFindValues],
[HInArray],
[IfNotFound],
[MatchMode],
[SearchMode],
// Help
LET(Help, TRIM(TEXTSPLIT(
"FUNCTION: →XYLookupλ( ReturnArray, VLookupValues, VArray, HLookupValues, HArray,¶" &
"→[IfNotFound], [MatchMode], [SearchMode])¶" &
"DESCRIPTION: →Find values matching 1+ criteria in a column, and 1+ in a header.¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/¶" &
"→5g-modeling/5g-component-libraries/5g-array-essentials-library/5g-xylookup%CE%BB¶" &
"VERSION: →BXL: Mar 15 2024¶" &
"PARAMETERS: →¶" &
" ReturnArray →(Required) A 2 dimensional range or table containing values to return¶" &
" VFindValues →(Required) 1+ criteria to find in VInArray¶" &
" VInArray →(Required) A column of values relating to each row in ReturnArray¶" &
" HFindValues →(Required) 1+ critiera to find in HInArray¶" &
" HInArray →(Required) A row of values (normally a header) relating to each column in ReturnArray.¶" &
" IfNotFound →(Optional) What to return when lookups fail: Default is #NA.¶" &
" MatchMode →(Optional) Specify:¶" &
"→0 - (Default) Exact match. If none found, return #NA.¶" &
"→-1- Exact match. If none found, return next smaller item.¶" &
"→1 - Exact match. If none found, return next larger item.¶" &
"→2 - A wildcard match where *, ?, and ~ have special meaning.¶" &
" SearchMode →(Optional) Specify:¶" &
"→1 - (Default) Search from the start¶" &
"→-1- Search from the end¶" &
"→2 - Search list sorted in ascending order. Fails if unsorted.¶" &
"→-2- Search list sorted in descending order. Fails if unsorted.",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, OR( ISOMITTED( ReturnArray),
ISOMITTED( VFindValues),
ISOMITTED( VInArray),
ISOMITTED( HFindValues),
ISOMITTED( HInArray)
),
Result, IF( Help?,
Help,
LET(
// Set defaults
IfNotFound, IF( ISOMITTED( IfNotFound), NA(), IfNotFound),
MatchMode, IF( ISOMITTED( MatchMode), 0, MatchMode),
SearchMode, IF( ISOMITTED( SearchMode), 1, SearchMode),
// This function attempts to convert xLookupValues to an appropriate Matches# argument
FixFindValues, LAMBDA( FindValues,
IF( OR( ISOMITTED(FindValues), LEN( TRIM( FindValues)) = 0),
{""},
IF( COUNTA( FindValues) = 1,
LET(
Values, TRIM( TEXTSPLIT( FindValues, ",")),
IFERROR( VALUE( Values), Values)),
FindValues)
)
),
VFindValues, FixFindValues( VFindValues),
HFindValues, FixFindValues( HFindValues),
// Prep
Cols, COLUMNS( ReturnArray),
Rows, ROWS( ReturnArray),
BaseRow, EXPAND( 0, 1, Cols, 0),
BaseCol, EXPAND( 0, Rows, 1, 0),
RowCounter, SEQUENCE( Rows),
ColCounter, SEQUENCE( , Cols),
// Procedure
VMatches, XMATCH( VFindValues, VInArray, MatchMode, SearchMode),
VFilter, N( REDUCE( BaseCol, VMatches,
LAMBDA( Acc, n,
MAP( Acc, n = RowCounter, OR)
)
)
),
HMatches, XMATCH( HFindValues, HInArray, MatchMode, SearchMode),
HFilter, N( REDUCE( BaseRow, HMatches,
LAMBDA( Acc, n,
MAP( Acc, n = ColCounter, OR)
)
)
),
FilteredRows, FILTER( ReturnArray, VFilter),
FilteredCols, FILTER( FilteredRows, HFilter),
Result, IFNA( FilteredCols, IfNotFound),
Result
)
),
Result
)
);
// Multi-list
/* FUNCTION NAME: ListMLλ
DESCRIPTION:*//**Return values from array that match up to 4 different criteria.*/
/* REVISIONS: Date Developer Description
Nov 01 2025 Craig Hatmaker Copyright
*/
ListMLλ = LAMBDA(
[ArrayToReturn],
[CriteriaArray1],
[Criteria1],
[CriteriaArray2],
[Criteria2],
[CriteriaArray3],
[Criteria3],
[CriteriaArray4],
[Criteria4],
[Function],
LET(
// Help
Help, TRIM(TEXTSPLIT(
"FUNCTION: →ListMLλ( ArrayToReturn, CriteriaArray1, Criteria1, [CriteriaArray2], [Criteria2],¶" &
"→  [CriteriaArray3], [Criteria3], [CriteriaArray4], [Criteria4], [Function]) ¶" &
"DESCRIPTION: →Return values from array that match up to 4 different criteria.¶" &
"→Exact matches only. Return #N/A if nothing found.¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-listifs%CE%BB¶" &
"VERSION: →BXL: Nov 01 25¶" &
"PARAMETERS: →¶" &
" ArrayToReturn →(Required) An array containing items to be returned¶" &
" CriteriaArray1→(Required) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria1¶" &
" Criteria1 →(Required) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray1¶" &
" CriteriaArray2→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria2¶" &
" Criteria2 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray2¶" &
" CriteriaArray3→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria3¶" &
" Criteria3 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray2¶" &
" CriteriaArray4→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria4¶" &
" Criteria4 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray4¶" &
" Function →(Optional) A function to process the returned array.",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, OR( ISOMITTED( ArrayToReturn),
OR( ISOMITTED( Criteria1), TRIM(Criteria1)=""),
OR( ISOMITTED( CriteriaArray1), AND(TRIM(CriteriaArray1)=""))
),
// Procedure
Result, IF( Help?,
Help,
LET(
Array, IF( OR( ISOMITTED( CriteriaArray2), CriteriaArray2 = ""),
MLookupλ(
ArrayToReturn,
Criteria1, CriteriaArray1),
IF( OR( ISOMITTED( CriteriaArray3), CriteriaArray3 = ""),
MLookupλ(
ArrayToReturn,
Criteria1, CriteriaArray1,
Criteria2, CriteriaArray2),
IF( OR( ISOMITTED( CriteriaArray4), CriteriaArray4 = ""),
MLookupλ(
ArrayToReturn,
Criteria1, CriteriaArray1,
Criteria2, CriteriaArray2,
Criteria3, CriteriaArray3),
MLookupλ(
ArrayToReturn,
Criteria1, CriteriaArray1,
Criteria2, CriteriaArray2,
Criteria3, CriteriaArray3,
Criteria4, CriteriaArray4)
)
)
),
Result, IF( ISOMITTED( Function), Array, Function(Array)),
Result
)
),
Result
)
);
/* FUNCTION NAME: AvgMLλ
DESCRIPTION:*//**Average an array's values that match up to 4 different criteria.*/
/* REVISIONS: Date Developer Description
Nov 01 2025 Craig Hatmaker Copyright
*/
AvgMLλ = LAMBDA(
[ArrayToAvg],
[CriteriaArray1],
[Criteria1],
[CriteriaArray2],
[Criteria2],
[CriteriaArray3],
[Criteria3],
[CriteriaArray4],
[Criteria4],
LET(
// Help
Help, TRIM(TEXTSPLIT(
"FUNCTION: →AvgMLλ( ArrayToAvg, CriteriaArray1, Criteria1, [CriteriaArray2], [Criteria2],¶" &
"→  [CriteriaArray3], [Criteria3], [CriteriaArray4], [Criteria4]) ¶" &
"DESCRIPTION: →Average an array's values that match up to 4 different criteria.¶" &
"→Exact matches only. Return #N/A if nothing found.¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-avgifs%CE%BB¶" &
"VERSION: →BXL: Nov 01 25¶" &
"PARAMETERS: →¶" &
" ArrayToSum →(Required) An array containing items to average¶" &
" CriteriaArray1→(Required) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria1¶" &
" Criteria1 →(Required) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray1¶" &
" CriteriaArray2→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria2¶" &
" Criteria2 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray2¶" &
" CriteriaArray3→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria3¶" &
" Criteria3 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray2¶" &
" CriteriaArray4→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria4¶" &
" Criteria4 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray4",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, OR( ISOMITTED( ArrayToAvg),
OR( ISOMITTED( Criteria1), TRIM(Criteria1)=""),
OR( ISOMITTED( CriteriaArray1), AND(TRIM(CriteriaArray1)=""))
),
// Procedure
Result, IF( Help?,
Help,
ListIfsAλ( ArrayToAvg,
CriteriaArray1, Criteria1,
CriteriaArray2, Criteria2,
CriteriaArray3, Criteria3,
CriteriaArray4, Criteria4,
AVERAGE
)
),
Result
)
);
/* FUNCTION NAME: CountMLλ
DESCRIPTION:*//**Count an array's values that match up to 4 different criteria.*/
/* REVISIONS: Date Developer Description
Nov 01 2025 Craig Hatmaker Copyright
*/
CountMLλ = LAMBDA(
[CriteriaArray1],
[Criteria1],
[CriteriaArray2],
[Criteria2],
[CriteriaArray3],
[Criteria3],
[CriteriaArray4],
[Criteria4],
LET(
// Help
Help, TRIM(TEXTSPLIT(
"FUNCTION: →CountMLλ( ArrayToCount, CriteriaArray1, Criteria1, [CriteriaArray2], [Criteria2],¶" &
"→  [CriteriaArray3], [Criteria3], [CriteriaArray4], [Criteria4]) ¶" &
"DESCRIPTION: →Count an array's values that match up to 4 different criteria.¶" &
"→Exact matches only. Return #N/A if nothing found.¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-avgifs%CE%BB¶" &
"VERSION: →BXL: Nov 01 25¶" &
"PARAMETERS: →¶" &
" CriteriaArray1→(Required) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria1¶" &
" Criteria1 →(Required) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray1¶" &
" CriteriaArray2→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria2¶" &
" Criteria2 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray2¶" &
" CriteriaArray3→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria3¶" &
" Criteria3 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray2¶" &
" CriteriaArray4→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria4¶" &
" Criteria4 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray4",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, OR( ISOMITTED( CriteriaArray1),
OR( ISOMITTED( Criteria1), TRIM(Criteria1)=""),
OR( ISOMITTED( CriteriaArray1), AND(TRIM(CriteriaArray1)=""))
),
// Procedure
Result, IF( Help?,
Help,
ListMLλ( CriteriaArray1,
CriteriaArray1, Criteria1,
CriteriaArray2, Criteria2,
CriteriaArray3, Criteria3,
CriteriaArray4, Criteria4,
COUNTA
)
),
Result
)
);
/* FUNCTION NAME: MaxMLλ
DESCRIPTION:*//**Find the maximum in an array's values that match up to 4 different criteria.*/
/* REVISIONS: Date Developer Description
Nov 01 2025 Craig Hatmaker Copyright
*/
MaxMLλ = LAMBDA(
[ArrayToMax],
[CriteriaArray1],
[Criteria1],
[CriteriaArray2],
[Criteria2],
[CriteriaArray3],
[Criteria3],
[CriteriaArray4],
[Criteria4],
LET(
// Help
Help, TRIM(TEXTSPLIT(
"FUNCTION: →MaxMLλ( ArrayToMax, CriteriaArray1, Criteria1, [CriteriaArray2], [Criteria2],¶" &
"→  [CriteriaArray3], [Criteria3], [CriteriaArray4], [Criteria4]) ¶" &
"DESCRIPTION: →Find the maximum in an array's values that match up to 4 different criteria.¶" &
"→Exact matches only. Return #N/A if nothing found.¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-maxifs%CE%BB¶" &
"VERSION: →BXL: Nov 01 25¶" &
"PARAMETERS: →¶" &
" ArrayToMax →(Required) An array containing items to find the maxiumum in¶" &
" CriteriaArray1→(Required) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria1¶" &
" Criteria1 →(Required) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray1¶" &
" CriteriaArray2→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria2¶" &
" Criteria2 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray2¶" &
" CriteriaArray3→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria3¶" &
" Criteria3 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray2¶" &
" CriteriaArray4→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria4¶" &
" Criteria4 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray4",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, OR( ISOMITTED( ArrayToMax),
OR( ISOMITTED( Criteria1), TRIM(Criteria1)=""),
OR( ISOMITTED( CriteriaArray1), AND(TRIM(CriteriaArray1)=""))
),
// Procedure
Result, IF( Help?,
Help,
ListMLλ( ArrayToMax,
CriteriaArray1, Criteria1,
CriteriaArray2, Criteria2,
CriteriaArray3, Criteria3,
CriteriaArray4, Criteria4,
MAX
)
),
Result
)
);
/* FUNCTION NAME: MinMLλ
DESCRIPTION:*//**Find the minimum in an array's values that match up to 4 different criteria.*/
/* REVISIONS: Date Developer Description
Nov 01 2025 Craig Hatmaker Copyright
*/
MinMLλ = LAMBDA(
[ArrayToMin],
[CriteriaArray1],
[Criteria1],
[CriteriaArray2],
[Criteria2],
[CriteriaArray3],
[Criteria3],
[CriteriaArray4],
[Criteria4],
LET(
// Help
Help, TRIM(TEXTSPLIT(
"FUNCTION: →MinMLλ( ArrayToMin, CriteriaArray1, Criteria1, [CriteriaArray2], [Criteria2],¶" &
"→  [CriteriaArray3], [Criteria3], [CriteriaArray4], [Criteria4]) ¶" &
"DESCRIPTION: →Find the Minimum in an array's values that match up to 4 different criteria.¶" &
"→Exact matches only. Return #N/A if nothing found.¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-minifs%CE%BB¶" &
"VERSION: →BXL: Nov 01 25¶" &
"PARAMETERS: →¶" &
" ArrayToMin →(Required) An array containing items to find the miniumum in¶" &
" CriteriaArray1→(Required) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria1¶" &
" Criteria1 →(Required) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray1¶" &
" CriteriaArray2→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria2¶" &
" Criteria2 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray2¶" &
" CriteriaArray3→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria3¶" &
" Criteria3 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray2¶" &
" CriteriaArray4→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria4¶" &
" Criteria4 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray4",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, OR( ISOMITTED( ArrayToMin),
OR( ISOMITTED( Criteria1), TRIM(Criteria1)=""),
OR( ISOMITTED( CriteriaArray1), AND(TRIM(CriteriaArray1)=""))
),
// Procedure
Result, IF( Help?,
Help,
ListMLλ( ArrayToMin,
CriteriaArray1, Criteria1,
CriteriaArray2, Criteria2,
CriteriaArray3, Criteria3,
CriteriaArray4, Criteria4,
MIN
)
),
Result
)
);
/* FUNCTION NAME: SumMLλ
DESCRIPTION:*//**Total an array's values that match up to 4 different criteria.*/
/* REVISIONS: Date Developer Description
Nov 01 2025 Craig Hatmaker Copyright
*/
SumMLλ = LAMBDA(
[ArrayToSum],
[CriteriaArray1],
[Criteria1],
[CriteriaArray2],
[Criteria2],
[CriteriaArray3],
[Criteria3],
[CriteriaArray4],
[Criteria4],
LET(
// Help
Help, TRIM(TEXTSPLIT(
"FUNCTION: →SumMLλ( ArrayToAdd, CriteriaArray1, Criteria1, [CriteriaArray2], [Criteria2],¶" &
"→  [CriteriaArray3], [Criteria3], [CriteriaArray4], [Criteria4]) ¶" &
"DESCRIPTION: →Total an array's values that match up to 4 different criteria.¶" &
"→Exact matches only. Return #N/A if nothing found.¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-sumifs%CE%BB¶" &
"VERSION: →BXL: Nov 01 25¶" &
"PARAMETERS: →¶" &
" ArrayToSum →(Required) An array containing items to total¶" &
" CriteriaArray1→(Required) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria1¶" &
" Criteria1 →(Required) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray1¶" &
" CriteriaArray2→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria2¶" &
" Criteria2 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray2¶" &
" CriteriaArray3→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria3¶" &
" Criteria3 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray2¶" &
" CriteriaArray4→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria4¶" &
" Criteria4 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray4",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, OR( ISOMITTED( ArrayToSum),
OR( ISOMITTED( Criteria1), TRIM(Criteria1)=""),
OR( ISOMITTED( CriteriaArray1), AND(TRIM(CriteriaArray1)=""))
),
// Procedure
Result, IF( Help?,
Help,
ListMLλ( ArrayToSum,
CriteriaArray1, Criteria1,
CriteriaArray2, Criteria2,
CriteriaArray3, Criteria3,
CriteriaArray4, Criteria4,
SUM
)
),
Result
)
);
// Dynamic array versions of common Excel functions that only accept ranges
/* FUNCTION NAME: Compareλ
DESCRIPTION:*//**Determine if a value or array meets a criteria.*/
/* REVISIONS: Date Developer Description
Nov 03 2025 Craig Hatmaker Copyright
*/
Compareλ = LAMBDA(
[Array],
[Criteria],
LET(
// Help
Help, TRIM(TEXTSPLIT(
"FUNCTION: →Compareλ( Array, Criteria) ¶" &
"DESCRIPTION: →Determine if a value or array meets the criteria¶" &
"→This includes: =, >, <, >=, <=, and wildcard matches (*, ?)¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-compare%CE%BB¶" &
"VERSION: →BXL: Nov 03 25¶" &
"PARAMETERS: →¶" &
" Array →(Required) A value or array to compare against criteria¶" &
" Criteria →(Required) Criteria to compare to Array. ¶" &
"→ Exact and wildcard matches do not require an equals sign.",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, OR( ISOMITTED( Array),
ISOMITTED( Criteria)
),
// Procedure
Result, IF( Help?,
Help,
LET(
// Declare function to create REGEX wildcard search (if needed)
fnWildCard, LAMBDA(
Compare,
LET(
Equals, REGEXREPLACE( Compare, "\=", ""),
Asterisk, REGEXREPLACE( Equals, "\*", ".*"),
Question, REGEXREPLACE( Asterisk, "\?", "."),
Result, "^" & Question,
Result
)
),
// Determine comparison operator (if any)
Operator, IF( REGEXTEST( Criteria, "\*|\?", 1),
"WC",
IFNA( REGEXEXTRACT(Criteria, ">=|<=|<|>|="), "")
),
// Remove operator from criteria
CritValue, TRIM( SUBSTITUTE( Criteria, Operator, "")),
// Convert numbers as text to numbers
Compare, IFERROR( VALUE( CritValue), CritValue),
// Convert Operator to number to use more efficient CHOOSE instead of SWITCH
OprNum, IFNA( XMATCH( Operator, {"<=",">=",">","<","=","WC"}, 0), 5),
// Perform comparison
Result, CHOOSE( OprNum,
Array <=Compare,
Array >=Compare,
Array > Compare,
Array < Compare,
Array = Compare,
REGEXTEST(Array, fnWildCard( CritValue), 1)
),
Result
)
),
Result
)
);
/* FUNCTION NAME: ListIfsAλ
DESCRIPTION:*//**Return values from array that match up to 4 different criteria.*/
/* REVISIONS: Date Developer Description
Nov 01 2025 Craig Hatmaker Copyright
*/
ListIfsAλ = LAMBDA(
[ArrayToReturn],
[CriteriaArray1],
[Criteria1],
[CriteriaArray2],
[Criteria2],
[CriteriaArray3],
[Criteria3],
[CriteriaArray4],
[Criteria4],
[Function],
LET(
// Help
Help, TRIM(TEXTSPLIT(
"FUNCTION: →ListIfsAλ( ArrayToReturn, CriteriaArray1, Criteria1, [CriteriaArray2], [Criteria2],¶" &
"→  [CriteriaArray3], [Criteria3], [CriteriaArray4], [Criteria4], [Function]) ¶" &
"DESCRIPTION: →Return values from array that match up to 4 different criteria.¶" &
"→Exact matches only. Return #N/A if nothing found.¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-listifs%CE%BB¶" &
"VERSION: →BXL: Nov 01 25¶" &
"PARAMETERS: →¶" &
" ArrayToReturn →(Required) An array containing items to be returned¶" &
" CriteriaArray1→(Required) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria1¶" &
" Criteria1 →(Required) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray1¶" &
" CriteriaArray2→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria2¶" &
" Criteria2 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray2¶" &
" CriteriaArray3→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria3¶" &
" Criteria3 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray2¶" &
" CriteriaArray4→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria4¶" &
" Criteria4 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray4¶" &
" Function →(Optional) A function to process the returned array.",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, OR( ISOMITTED( ArrayToReturn),
OR( ISOMITTED( Criteria1), TRIM(Criteria1)=""),
OR( ISOMITTED( CriteriaArray1), AND(TRIM(CriteriaArray1)=""))
),
// Procedure
Result, IF( Help?,
Help,
LET(
Matches, IF( OR( ISOMITTED( CriteriaArray2), AND(TRIM(CriteriaArray2)="")),
Compareλ( CriteriaArray1, Criteria1),
IF( OR( ISOMITTED( CriteriaArray3), AND(TRIM(CriteriaArray3)="")),
Compareλ( CriteriaArray1, Criteria1) *
Compareλ( CriteriaArray2, Criteria2),
IF( OR( ISOMITTED( CriteriaArray4), AND(TRIM(CriteriaArray4)="")),
Compareλ( CriteriaArray1, Criteria1) *
Compareλ( CriteriaArray2, Criteria2) *
Compareλ( CriteriaArray3, Criteria3),
Compareλ( CriteriaArray1, Criteria1) *
Compareλ( CriteriaArray2, Criteria2) *
Compareλ( CriteriaArray3, Criteria3) *
Compareλ( CriteriaArray4, Criteria4)
)
)
),
Array, FILTER( ArrayToReturn, Matches),
Result, IFERROR( IF( ISOMITTED( Function), Array, Function(Array)), #N/A),
Function(Array)
)
),
Result
)
);
/* FUNCTION NAME: AvgIfsAλ
DESCRIPTION:*//**Average an array's values that match up to 4 different criteria.*/
/* REVISIONS: Date Developer Description
Nov 01 2025 Craig Hatmaker Copyright
*/
AvgIfsAλ = LAMBDA(
[ArrayToAvg],
[CriteriaArray1],
[Criteria1],
[CriteriaArray2],
[Criteria2],
[CriteriaArray3],
[Criteria3],
[CriteriaArray4],
[Criteria4],
LET(
// Help
Help, TRIM(TEXTSPLIT(
"FUNCTION: →AvgIfsAλ( ArrayToAvg, CriteriaArray1, Criteria1, [CriteriaArray2], [Criteria2],¶" &
"→  [CriteriaArray3], [Criteria3], [CriteriaArray4], [Criteria4]) ¶" &
"DESCRIPTION: →Average an array's values that match up to 4 different criteria.¶" &
"→Exact matches only. Return #N/A if nothing found.¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-avgifs%CE%BB¶" &
"VERSION: →BXL: Nov 01 25¶" &
"PARAMETERS: →¶" &
" ArrayToSum →(Required) An array containing items to average¶" &
" CriteriaArray1→(Required) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria1¶" &
" Criteria1 →(Required) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray1¶" &
" CriteriaArray2→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria2¶" &
" Criteria2 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray2¶" &
" CriteriaArray3→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria3¶" &
" Criteria3 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray2¶" &
" CriteriaArray4→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria4¶" &
" Criteria4 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray4",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, OR( ISOMITTED( ArrayToAvg),
OR( ISOMITTED( Criteria1), TRIM(Criteria1)=""),
OR( ISOMITTED( CriteriaArray1), AND(TRIM(CriteriaArray1)=""))
),
// Procedure
Result, IF( Help?,
Help,
ListIfsAλ( ArrayToAvg,
CriteriaArray1, Criteria1,
CriteriaArray2, Criteria2,
CriteriaArray3, Criteria3,
CriteriaArray4, Criteria4,
AVERAGE
)
),
Result
)
);
/* FUNCTION NAME: CountIfsAλ
DESCRIPTION:*//**Count an array's values that match up to 4 different criteria.*/
/* REVISIONS: Date Developer Description
Nov 01 2025 Craig Hatmaker Copyright
*/
CountIfsAλ = LAMBDA(
[CriteriaArray1],
[Criteria1],
[CriteriaArray2],
[Criteria2],
[CriteriaArray3],
[Criteria3],
[CriteriaArray4],
[Criteria4],
LET(
// Help
Help, TRIM(TEXTSPLIT(
"FUNCTION: →CountIfsAλ( ArrayToCount, CriteriaArray1, Criteria1, [CriteriaArray2], [Criteria2],¶" &
"→  [CriteriaArray3], [Criteria3], [CriteriaArray4], [Criteria4]) ¶" &
"DESCRIPTION: →Count an array's values that match up to 4 different criteria.¶" &
"→Exact matches only. Return #N/A if nothing found.¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-avgifs%CE%BB¶" &
"VERSION: →BXL: Nov 01 25¶" &
"PARAMETERS: →¶" &
" CriteriaArray1→(Required) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria1¶" &
" Criteria1 →(Required) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray1¶" &
" CriteriaArray2→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria2¶" &
" Criteria2 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray2¶" &
" CriteriaArray3→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria3¶" &
" Criteria3 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray2¶" &
" CriteriaArray4→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria4¶" &
" Criteria4 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray4",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, OR( ISOMITTED( CriteriaArray1),
OR( ISOMITTED( Criteria1), TRIM(Criteria1)=""),
OR( ISOMITTED( CriteriaArray1), AND(TRIM(CriteriaArray1)=""))
),
// Procedure
Result, IF( Help?,
Help,
ListIfsAλ( CriteriaArray1,
CriteriaArray1, Criteria1,
CriteriaArray2, Criteria2,
CriteriaArray3, Criteria3,
CriteriaArray4, Criteria4,
COUNTA
)
),
Result
)
);
/* FUNCTION NAME: MaxIfsAλ
DESCRIPTION:*//**Find the maximum in an array's values that match up to 4 different criteria.*/
/* REVISIONS: Date Developer Description
Nov 01 2025 Craig Hatmaker Copyright
*/
MaxIfsAλ = LAMBDA(
[ArrayToMax],
[CriteriaArray1],
[Criteria1],
[CriteriaArray2],
[Criteria2],
[CriteriaArray3],
[Criteria3],
[CriteriaArray4],
[Criteria4],
LET(
// Help
Help, TRIM(TEXTSPLIT(
"FUNCTION: →MaxIfsAλ( ArrayToMax, CriteriaArray1, Criteria1, [CriteriaArray2], [Criteria2],¶" &
"→  [CriteriaArray3], [Criteria3], [CriteriaArray4], [Criteria4]) ¶" &
"DESCRIPTION: →Find the maximum in an array's values that match up to 4 different criteria.¶" &
"→Exact matches only. Return #N/A if nothing found.¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-maxifs%CE%BB¶" &
"VERSION: →BXL: Nov 01 25¶" &
"PARAMETERS: →¶" &
" ArrayToMax →(Required) An array containing items to find the maxiumum in¶" &
" CriteriaArray1→(Required) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria1¶" &
" Criteria1 →(Required) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray1¶" &
" CriteriaArray2→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria2¶" &
" Criteria2 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray2¶" &
" CriteriaArray3→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria3¶" &
" Criteria3 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray2¶" &
" CriteriaArray4→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria4¶" &
" Criteria4 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray4",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, OR( ISOMITTED( ArrayToMax),
OR( ISOMITTED( Criteria1), TRIM(Criteria1)=""),
OR( ISOMITTED( CriteriaArray1), AND(TRIM(CriteriaArray1)=""))
),
// Procedure
Result, IF( Help?,
Help,
ListIfsAλ( ArrayToMax,
CriteriaArray1, Criteria1,
CriteriaArray2, Criteria2,
CriteriaArray3, Criteria3,
CriteriaArray4, Criteria4,
MAX
)
),
Result
)
);
/* FUNCTION NAME: MinIfsAλ
DESCRIPTION:*//**Find the minimum in an array's values that match up to 4 different criteria.*/
/* REVISIONS: Date Developer Description
Nov 01 2025 Craig Hatmaker Copyright
*/
MinIfsAλ = LAMBDA(
[ArrayToMin],
[CriteriaArray1],
[Criteria1],
[CriteriaArray2],
[Criteria2],
[CriteriaArray3],
[Criteria3],
[CriteriaArray4],
[Criteria4],
LET(
// Help
Help, TRIM(TEXTSPLIT(
"FUNCTION: →MinIfsAλ( ArrayToMin, CriteriaArray1, Criteria1, [CriteriaArray2], [Criteria2],¶" &
"→  [CriteriaArray3], [Criteria3], [CriteriaArray4], [Criteria4]) ¶" &
"DESCRIPTION: →Find the Minimum in an array's values that match up to 4 different criteria.¶" &
"→Exact matches only. Return #N/A if nothing found.¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-minifs%CE%BB¶" &
"VERSION: →BXL: Nov 01 25¶" &
"PARAMETERS: →¶" &
" ArrayToMin →(Required) An array containing items to find the miniumum in¶" &
" CriteriaArray1→(Required) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria1¶" &
" Criteria1 →(Required) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray1¶" &
" CriteriaArray2→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria2¶" &
" Criteria2 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray2¶" &
" CriteriaArray3→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria3¶" &
" Criteria3 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray2¶" &
" CriteriaArray4→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria4¶" &
" Criteria4 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray4",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, OR( ISOMITTED( ArrayToMin),
OR( ISOMITTED( Criteria1), TRIM(Criteria1)=""),
OR( ISOMITTED( CriteriaArray1), AND(TRIM(CriteriaArray1)=""))
),
// Procedure
Result, IF( Help?,
Help,
ListIfsAλ( ArrayToMin,
CriteriaArray1, Criteria1,
CriteriaArray2, Criteria2,
CriteriaArray3, Criteria3,
CriteriaArray4, Criteria4,
MIN
)
),
Result
)
);
/* FUNCTION NAME: SumIfsAλ
DESCRIPTION:*//**Total an array's values that match up to 4 different criteria.*/
/* REVISIONS: Date Developer Description
Nov 01 2025 Craig Hatmaker Copyright
*/
SumIfsAλ = LAMBDA(
[ArrayToSum],
[CriteriaArray1],
[Criteria1],
[CriteriaArray2],
[Criteria2],
[CriteriaArray3],
[Criteria3],
[CriteriaArray4],
[Criteria4],
LET(
// Help
Help, TRIM(TEXTSPLIT(
"FUNCTION: →SumIfsAλ( ArrayToAdd, CriteriaArray1, Criteria1, [CriteriaArray2], [Criteria2],¶" &
"→  [CriteriaArray3], [Criteria3], [CriteriaArray4], [Criteria4]) ¶" &
"DESCRIPTION: →Total an array's values that match up to 4 different criteria.¶" &
"→Exact matches only. Return #N/A if nothing found.¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-sumifs%CE%BB¶" &
"VERSION: →BXL: Nov 01 25¶" &
"PARAMETERS: →¶" &
" ArrayToSum →(Required) An array containing items to total¶" &
" CriteriaArray1→(Required) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria1¶" &
" Criteria1 →(Required) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray1¶" &
" CriteriaArray2→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria2¶" &
" Criteria2 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray2¶" &
" CriteriaArray3→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria3¶" &
" Criteria3 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray2¶" &
" CriteriaArray4→(Optional) An array column or row with as many columns or rows as ArrayToSum¶" &
"→ that is tested by Criteria4¶" &
" Criteria4 →(Optional) An array row or column, or a comma separated list of values ¶" &
"→ to find in CriteriaArray4",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, OR( ISOMITTED( ArrayToSum),
OR( ISOMITTED( Criteria1), TRIM(Criteria1)=""),
OR( ISOMITTED( CriteriaArray1), AND(TRIM(CriteriaArray1)=""))
),
// Procedure
Result, IF( Help?,
Help,
ListIfsAλ( ArrayToSum,
CriteriaArray1, Criteria1,
CriteriaArray2, Criteria2,
CriteriaArray3, Criteria3,
CriteriaArray4, Criteria4,
SUM
)
),
Result
)
);
// Dynamic array and position aware versions of common Excel functions
/* FUNCTION NAME: ProcessAλ
DESCRIPTION:*//**Apply a function to all array rows or columns
based on the function's position relative to the array (if in the grid)*/
/* REVISIONS: Date Developer Description
Sep 24 2025 Craig Hatmaker Copyright
*/
ProcessAλ = LAMBDA(
// Parameter Declarations
[Array],
[Function],
// Help
LET(Help, TRIM(TEXTSPLIT(
"FUNCTION: →ProcessAλ( Array, [Function])¶" &
"DESCRIPTION: →Apply a function to all array rows (if beside ) or columns (if above or below)¶" &
"→This is a helper function¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-array-position-aware-suite¶" &
"VERSION: →BXL: Sep 24, 2025¶" &
"PARAMETERS: →¶" &
" Array →(Required) An array containing values to process¶" &
" Function →(Optional) A function to apply to the array. ¶" &
"→ The default is SUM.",
"→", "¶" )
),
// Check inputs - Omitted required arguments
Help?, ISOMITTED( Array),
Result, IF( Help?,
Help,
LET(
// Set Default
ByRow?, IF( ISREF( Array),
ROW() = @ROW( Array),
FALSE),
Function, IF( ISOMITTED( Function), SUM, Function),
// Process
Result, IF( ByRow?,
BYROW( Array, Function),
BYCOL( Array, Function)
),
Result
)
),
Result
)
);
/* FUNCTION NAME: AndAλ
DESCRIPTION:*/ /**AND all of an array's rows or columns*/
/* REVISIONS: Date Developer Description
Nov 03 2025 Craig Hatmaker Copyright
*/
AndAλ = LAMBDA(
// Arguments
[Array],
LET(
// Help
Help, TRIM( TEXTSPLIT(
"FUNCTION: →AndAλ( Array)¶" &
"DESCRIPTION: →AND all of an array's rows (if beside) or columns (if above or below)¶" &
"→This is part of the array position aware suite of functions¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/ ¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-array-position-aware-suite¶" &
"VERSION: →BXL: Nov 03 2025¶" &
"PARAMETERS: →¶" &
" Array →(Required) An array in the grid (cell reference) to AND",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, ISOMITTED( Array),
Result, IF( Help?, Help, ProcessAλ( Array, AND)),
Result
)
);
/* FUNCTION NAME: AvgAλ
DESCRIPTION:*/ /**AVERAGE all of an array's rows or columns*/
/* REVISIONS: Date Developer Description
Nov 03 2025 Craig Hatmaker Copyright
*/
AvgAλ = LAMBDA(
// Arguments
[Array],
LET(
// Help
Help, TRIM( TEXTSPLIT(
"FUNCTION: →AvgAλ( Array)¶" &
"DESCRIPTION: →AVERAGE all of an array's rows (if beside) or columns (if above or below)¶" &
"→This is part of the array position aware suite of functions¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/ ¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-array-position-aware-suite¶" &
"VERSION: →BXL: Nov 03 2025¶" &
"PARAMETERS: →¶" &
" Array →(Required) An array in the grid (cell reference) to AVERAGE" ,
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, ISOMITTED( Array),
Result, IF( Help?, Help, ProcessAλ( Array, AVERAGE)),
Result
)
);
/* FUNCTION NAME: MaxAλ
DESCRIPTION:*/ /**Find the MAX of all of an array's rows or columns*/
/* REVISIONS: Date Developer Description
Nov 03 2025 Craig Hatmaker Copyright
*/
MaxAλ = LAMBDA(
// Arguments
[Array],
LET(
// Help
Help, TRIM( TEXTSPLIT(
"FUNCTION: →MaxAλ( Array)¶" &
"DESCRIPTION: →Find the MAX of all of an array's rows (if beside) or columns (if above or below)¶" &
"→This is part of the array position aware suite of functions¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/ ¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-array-position-aware-suite¶" &
"VERSION: →BXL: Nov 03 2025¶" &
"PARAMETERS: →¶" &
" Array →(Required) An array in the grid (cell reference) to MAX" ,
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, ISOMITTED( Array),
Result, IF( Help?, Help, ProcessAλ( Array, MAX)),
Result
)
);
/* FUNCTION NAME: MinAλ
DESCRIPTION:*/ /**Find the MIN of all of an array's rows or columns*/
/* REVISIONS: Date Developer Description
Nov 03 2025 Craig Hatmaker Copyright
*/
MinAλ = LAMBDA(
// Arguments
[Array],
LET(
// Help
Help, TRIM( TEXTSPLIT(
"FUNCTION: →MinAλ( Array)¶" &
"DESCRIPTION: →Find the MIN of all of an array's rows (if beside) or columns (if above or below)¶" &
"→This is part of the array position aware suite of functions¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/ ¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-array-position-aware-suite¶" &
"VERSION: →BXL: Nov 03 2025¶" &
"PARAMETERS: →¶" &
" Array →(Required) An array in the grid (cell reference) to MIN" ,
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, ISOMITTED( Array),
Result, IF( Help?, Help, ProcessAλ( Array, MIN)),
Result
)
);
/* FUNCTION NAME: OrAλ
DESCRIPTION:*/ /**OR all of an array's rows or columns*/
/* REVISIONS: Date Developer Description
Nov 03 2025 Craig Hatmaker Copyright
*/
ORAλ = LAMBDA(
// Arguments
[Array],
LET(
// Help
Help, TRIM( TEXTSPLIT(
"FUNCTION: →OrAλ( Array)¶" &
"DESCRIPTION: →OR all of an array's rows (if beside) or columns (if above or below)¶" &
"→This is part of the array position aware suite of functions¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/ ¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-array-position-aware-suite¶" &
"VERSION: →BXL: Nov 03 2025¶" &
"PARAMETERS: →¶" &
" Array →(Required) An array in the grid (cell reference) to OR" ,
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, ISOMITTED( Array),
Result, IF( Help?, Help, ProcessAλ( Array, OR)),
Result
)
);
/* FUNCTION NAME: SumAλ
DESCRIPTION:*/ /**SUM all of an array's rows or columns*/
/* REVISIONS: Date Developer Description
Nov 03 2025 Craig Hatmaker Copyright
*/
SumAλ = LAMBDA(
// Arguments
[Array],
LET(
// Help
Help, TRIM( TEXTSPLIT(
"FUNCTION: →SumAλ( Array)¶" &
"DESCRIPTION: →SUM all of an array's rows (if beside) or columns (if above or below)¶" &
"→This is part of the array position aware suite of functions¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/ ¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-array-position-aware-suite¶" &
"VERSION: →BXL: Nov 03 2025¶" &
"PARAMETERS: →¶" &
" Array →(Required) An array in the grid (cell reference) to SUM" ,
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, ISOMITTED( Array),
Result, IF( Help?, Help, ProcessAλ( Array, SUM)),
Result
)
);
// Array Row or column aware functions
/* FUNCTION NAME: ProcessRCλ
DESCRIPTION:*/ /**Array position aware function for processing a single row or column*/
/* REVISIONS: Date Developer Description
Nov 03 2025 Craig Hatmaker Copyright
*/
ProcessRCλ = LAMBDA(
// Arguments
[Array],
[Function],
LET(
// Help
Help, TRIM( TEXTSPLIT(
"FUNCTION: →ProcessRCλ( Array, [Function])¶" &
"DESCRIPTION: →Process array row or column. This is a helper function ¶" &
"→This is part of the array position aware suite of functions¶" &
"→This processes a single array row (if beside) or column (if above or below).¶" &
"→Returns #VALUE! when not in the array's rows or columns¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/ ¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-array-position-aware-suite¶" &
"VERSION: →BXL: Nov 03 2025¶" &
"PARAMETERS: →¶" &
" Array →(Required) An array in the grid (cell reference) to process¶" &
" Function →(Optional) The function to apply to the Array's row (if beside array)¶" &
"→ or column(if above or below). This defaults to SUM." ,
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, OR( ISOMITTED( Array),
NOT( ISREF( Array))),
Result, IF( Help?,
Help,
LET(
// Handle defaults
Function, IF( ISOMITTED( Function), SUM, Function),
// Procedure
ByRow?, IF( ISREF( Array),
(ROW() >= @ROW( Array)) * (ROW() <= (@ROW( Array) + ROWS( Array) - 1)),
FALSE),
RCNum, IF( ByRow?,
ROW() - @ROW( Array) + 1,
COLUMN() - @COLUMN( Array) + 1),
RowOrCol, IF( ByRow?,
CHOOSEROWS( Array, RCNum),
CHOOSECOLS( Array, RCNum)),
Result, Function( RowOrCol),
Result
)
),
Result
)
);
/* FUNCTION NAME: AndRCλ
DESCRIPTION:*/ /**AND an array's row or column*/
/* REVISIONS: Date Developer Description
Nov 03 2025 Craig Hatmaker Copyright
*/
AndRCλ = LAMBDA(
// Arguments
[Array],
LET(
// Help
Help, TRIM( TEXTSPLIT(
"FUNCTION: →AndRCλ( Array)¶" &
"DESCRIPTION: →AND an array row or column. ¶" &
"→This is part of the array position aware suite of functions¶" &
"→This processes a single array row (if beside) or column (if above or below).¶" &
"→Returns #VALUE! when not in the array's rows or columns¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/ ¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-array-position-aware-suite¶" &
"VERSION: →BXL: Nov 03 2025¶" &
"PARAMETERS: →¶" &
" Array →(Required) An array in the grid (cell reference) to AND" ,
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, ISOMITTED( Array),
Result, IF( Help?, Help, ProcessRCλ( Array, AND)),
Result
)
);
/* FUNCTION NAME: AvgRCλ
DESCRIPTION:*/ /**AVERAGE an array's row or column*/
/* REVISIONS: Date Developer Description
Nov 03 2025 Craig Hatmaker Copyright
*/
AvgRCλ = LAMBDA(
// Arguments
[Array],
LET(
// Help
Help, TRIM( TEXTSPLIT(
"FUNCTION: →AvgRCλ( Array)¶" &
"DESCRIPTION: →AVERAGE an array row or column. ¶" &
"→This is part of the array position aware suite of functions¶" &
"→This processes a single array row (if beside) or column (if above or below).¶" &
"→Returns #VALUE! when not in the array's rows or columns¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/ ¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-array-position-aware-suite¶" &
"VERSION: →BXL: Nov 03 2025¶" &
"PARAMETERS: →¶" &
" Array →(Required) An array in the grid (cell reference) to AVERAGE" ,
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, ISOMITTED( Array),
Result, IF( Help?, Help, ProcessRCλ( Array, AVERAGE)),
Result
)
);
/* FUNCTION NAME: MaxRCλ
DESCRIPTION:*/ /**MAX an array's row or column*/
/* REVISIONS: Date Developer Description
Nov 03 2025 Craig Hatmaker Copyright
*/
MaxRCλ = LAMBDA(
// Arguments
[Array],
LET(
// Help
Help, TRIM( TEXTSPLIT(
"FUNCTION: →MaxRCλ( Array)¶" &
"DESCRIPTION: →Find the maximum value in an array row or column. ¶" &
"→This is part of the array position aware suite of functions¶" &
"→This processes a single array row (if beside) or column (if above or below).¶" &
"→Returns #VALUE! when not in the array's rows or columns¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/ ¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-array-position-aware-suite¶" &
"VERSION: →BXL: Nov 03 2025¶" &
"PARAMETERS: →¶" &
" Array →(Required) An array in the grid (cell reference) to MAX" ,
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, ISOMITTED( Array),
Result, IF( Help?, Help, ProcessRCλ( Array, MAX)),
Result
)
);
/* FUNCTION NAME: MinRCλ
DESCRIPTION:*/ /**MIN an array's row or column*/
/* REVISIONS: Date Developer Description
Nov 03 2025 Craig Hatmaker Copyright
*/
MinRCλ = LAMBDA(
// Arguments
[Array],
LET(
// Help
Help, TRIM( TEXTSPLIT(
"FUNCTION: →MinRCλ( Array)¶" &
"DESCRIPTION: →Find the minimum value in an array row or column. ¶" &
"→This is part of the array position aware suite of functions¶" &
"→This processes a single array row (if beside) or column (if above or below).¶" &
"→Returns #VALUE! when not in the array's rows or columns¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/ ¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-array-position-aware-suite¶" &
"VERSION: →BXL: Nov 03 2025¶" &
"PARAMETERS: →¶" &
" Array →(Required) An array in the grid (cell reference) to Min" ,
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, ISOMITTED( Array),
Result, IF( Help?, Help, ProcessRCλ( Array, MIN)),
Result
)
);
/* FUNCTION NAME: OrRCλ
DESCRIPTION:*/ /**AND an array's row or column*/
/* REVISIONS: Date Developer Description
Nov 03 2025 Craig Hatmaker Copyright
*/
OrRCλ = LAMBDA(
// Arguments
[Array],
LET(
// Help
Help, TRIM( TEXTSPLIT(
"FUNCTION: →OrRCλ( Array)¶" &
"DESCRIPTION: →OR an array row or column. ¶" &
"→This is part of the array position aware suite of functions¶" &
"→This processes a single array row (if beside) or column (if above or below).¶" &
"→Returns #VALUE! when not in the array's rows or columns¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/ ¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-array-position-aware-suite¶" &
"VERSION: →BXL: Nov 03 2025¶" &
"PARAMETERS: →¶" &
" Array →(Required) An array in the grid (cell reference) to OR" ,
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, ISOMITTED( Array),
Result, IF( Help?, Help, ProcessRCλ( Array, OR)),
Result
)
);
/* FUNCTION NAME: SumRCλ
DESCRIPTION:*/ /**SUM an array's row or column*/
/* REVISIONS: Date Developer Description
Nov 03 2025 Craig Hatmaker Copyright
*/
SumRCλ = LAMBDA(
// Arguments
[Array],
LET(
// Help
Help, TRIM( TEXTSPLIT(
"FUNCTION: →SumRCλ( Array)¶" &
"DESCRIPTION: →Total an array row or column. ¶" &
"→This is part of the array position aware suite of functions¶" &
"→This processes a single array row (if beside) or column (if above or below).¶" &
"→Returns #VALUE! when not in the array's rows or columns¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/ ¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-array-position-aware-suite¶" &
"VERSION: →BXL: Nov 03 2025¶" &
"PARAMETERS: →¶" &
" Array →(Required) An array in the grid (cell reference) to SUM" ,
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, ISOMITTED( Array),
Result, IF( Help?, Help, ProcessRCλ( Array, SUM)),
Result
)
);
// On change suite - Functions that respond to whan an array changes
/* FUNCTION NAME: OnChangeλ
DESCRIPTION:*//**Create a flag (1) when an array changes*/
/* REVISIONS: Date Developer Description
Sep 24 2025 Craig Hatmaker Copyright
*/
OnChangeλ = LAMBDA(
// Parameter Declarations
[Array],
LET(
// Help
Help, TRIM(TEXTSPLIT(
"FUNCTION: →OnChangeλ( Array)¶" &
"DESCRIPTION: →Create a flag (1) when an array changes¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→/5g-component-libraries/5g-array-essentials-library/5g-onchange-suite¶" &
"VERSION: →BXL: Sep 24 2025¶" &
"PARAMETERS: →¶" &
" Array →(Required) An array of values.",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, OR( ISOMITTED( Array)),
Result, IF( Help?,
Help,
LET(
// Procedure
Rows, ROWS( Array),
Cols, COLUMNS( Array),
Col, TOCOL( Array),
Shift, VSTACK( TAKE( Col, 1), DROP( Col, -1)),
Changes, N(Col <> Shift),
Result, WRAPROWS( Changes, Cols),
Result
)
),
Result
)
);
/* FUNCTION NAME: OnChangeCountλ
DESCRIPTION:*//**Count when an array changes*/
/* REVISIONS: Date Developer Description
Sep 24 2025 Craig Hatmaker Copyright
*/
OnChangeCountλ = LAMBDA(
// Parameter Declarations
[Array],
[Start],
LET(
// Help
Help, TRIM(TEXTSPLIT(
"FUNCTION: →OnChangeCountλ( Array, [Start])¶" &
"DESCRIPTION: →Increment a counter when an array changes¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→/5g-component-libraries/5g-array-essentials-library/5g-onchange-suite¶" &
"VERSION: →BXL: Sep 24 2025¶" &
"PARAMETERS: →¶" &
" Array →(Required) An array of values.¶" &
" Start →(Optional) Counter's start value. Default = 1.",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, OR( ISOMITTED( Array)),
Result, IF( Help?,
Help,
LET(
// Set Defaults
Start, IF( ISOMITTED( Start), 1, Start),
// Define OnChange function
fnOnChange, LAMBDA( Array,
LET(
Rows, ROWS( Array),
Cols, COLUMNS( Array),
Col, TOCOL( Array),
Shift, VSTACK( TAKE( Col, 1), DROP( Col, -1)),
Changes, N(Col <> Shift),
Result, WRAPROWS( Changes, Cols),
Result
)
),
// Procedure
Flagged, fnOnChange(Array),
Result, SCAN( Start, Flagged, SUM),
Result
)
),
Result
)
);
/* FUNCTION NAME: OnChangeResetλ
DESCRIPTION:*//**Count when an array does not change, then reset counter when it does*/
/* REVISIONS: Date Developer Description
Sep 24 2025 Craig Hatmaker Copyright
*/
OnChangeResetλ = LAMBDA(
[Array],
LET(
// Help
Help, TRIM( TEXTSPLIT(
"FUNCTION: →OnChangeResetλ( Array)¶" &
"DESCRIPTION: →Count when an array does not change, then reset counter when it does.¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→/5g-component-libraries/5g-array-essentials-library/5g-onchange-suite¶" &
"VERSION: →BXL: Sep 24 2025¶" &
"PARAMETERS: →¶" &
" Array →(Required) An array of values.",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, OR( ISOMITTED( Array)),
Result, IF( Help?,
Help,
LET(
// Define OnChange function
fnOnChange, LAMBDA( Array,
LET(
Rows, ROWS( Array),
Cols, COLUMNS( Array),
Col, TOCOL( Array),
Shift, VSTACK( TAKE( Col, 1), DROP( Col, -1)),
Changes, N(Col <> Shift),
Result, WRAPROWS( Changes, Cols),
Result
)
),
// Procedure
Flagged, NOT( OnChangeλ( Array)),
Result, SCAN( 0, Flagged, LAMBDA( Acc, n, Acc * n + 1)),
Result
)
),
Result
)
);
/* FUNCTION NAME: RunTotColsλ
DESCRIPTION:*//**Create a running total for values in each column of an array*/
/* REVISIONS: Date Developer Description
Sep 05 2024 Craig Hatmaker Initial development w/help from Diarmuid Early
*/
RunTotColsλ = LAMBDA(
// Parameter Declarations
[Values],
[OpeningValues],
// Help
LET(Help, TRIM(TEXTSPLIT(
"FUNCTION: →RunTotColsλ( Values, [OpeningValues])¶" &
"DESCRIPTION: →Create a running total for values in each column of an array¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-runtotcols%CE%BB¶" &
"VERSION: →BXL: Sep 05 2024¶" &
"PARAMETERS: →¶" &
" Values →(Required) A 1 or 2 dimensional array/range of values.¶" &
" OpeningValues →(Optional) Opening values for each column in Values. Default is 0.",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, OR( ISOMITTED( Values)),
Result, IF( Help?,
Help,
LET(
// Set Defaults
OpeningValues, IF( ISOMITTED( OpeningValues), 0, OpeningValues),
// Procedure
Values, TRANSPOSE( Values),
Scanned, SCAN( 0, Values, SUM),
/* LET step Scanned produces a running total of everything.
LET step RowReset fixes the first value in each row */
RowReset, Scanned - DROP( VSTACK( 0, TAKE( Scanned, , -1)), -1),
Result, TRANSPOSE( OpeningValues + RowReset),
Result
)
),
Result
)
);
/* FUNCTION NAME: RunTotRowsλ
DESCRIPTION:*//**Create a running total for values in each row of an array*/
/* REVISIONS: Date Developer Description
Sep 05 2024 Craig Hatmaker Initial development w/help from Diarmuid Early
*/
RunTotRowsλ = LAMBDA(
// Parameter Declarations
[Values],
[OpeningValues],
// Help
LET(Help, TRIM(TEXTSPLIT(
"FUNCTION: →RunTotRowsλ( Values, [OpeningValues])¶" &
"DESCRIPTION: →Create a running total for values in each row of an array¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-runtotrows%CE%BB¶" &
"VERSION: →BXL: Sep 05 2024¶" &
"PARAMETERS: →¶" &
" Values →(Required) A 1 or 2 dimensional array/range of values.¶" &
"OpeningValues →(Optional) Opening values for each row in Values. Default is 0.",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, OR( ISOMITTED( Values)),
Result, IF( Help?,
Help,
LET(
// Set Defaults
OpeningValues, IF( ISOMITTED( OpeningValues), 0, OpeningValues),
// Procedure
Scanned, SCAN( 0, Values, SUM),
/* LET step Scanned produces a running total of everything.
LET step RowReset fixes the first value in each row */
RowReset, Scanned - DROP( VSTACK( 0, TAKE( Scanned, , -1)), -1),
Result, OpeningValues + RowReset,
Result
)
),
Result
)
);
// Rolling Suite
/* FUNCTION NAME: Rollingλ
DESCRIPTION:*//**Roll a window over an array and apply a function to the window.*/
/* REVISIONS: Date Developer Description
Aug 23 2025 Craig Hatmaker Copyright
Nov 04 2025 Craig Hatmaker Made RollRows? position aware
*/
Rollingλ = LAMBDA(
// Parameter Declarations
[Array],
[Size],
[Offset],
[AllowPartial],
[Function],
[RollRows?],
LET(
// Help
Help, TRIM(TEXTSPLIT(
"FUNCTION: →Rollingλ(Array, [Size], [Offset], [AllowPartial], [Function], [RollRows?])¶" &
"DESCRIPTION: →Roll a window over an array and apply a function to the window.¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-rolling%CE%BB¶" &
"VERSION: →BXL: Aug 23 2025¶" &
"PARAMETERS: →¶" &
" Array →(Required) An array to roll a window over.¶" &
" Size →(Optional) Window's size (number of values). Must be > 0. Default = 3.¶" &
" Offset →(Optional) Number of values after (+) or prior (-) current position. Default = -2.¶" &
" AllowPartial →(Optional) TRUE (Default) = Apply function to window that starts or ends¶" &
"→ outside the array (the window will be smaller than Size).¶" &
"→ FALSE = Do not apply function when window starts or ends outside array.¶" &
" Function →(Optional) An Excel function accepting an array of values or a LAMBDA.¶" &
"→ Default is SUM()¶" &
" RollRows? →(Optional) TRUE or 1 = Rolling proceeds horizontally by row.¶" &
"→ FALSE or 0 = Rolling proceeds Vertically by column. Default=TRUE",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, ISOMITTED( Array),
// Check inputs - Set optional arguments' defaults
Size, IF( ISOMITTED( Size), 3, Size),
Offset, IF( ISOMITTED( Offset), -2, Offset),
AllowPartial, IF( ISOMITTED( AllowPartial), TRUE, AllowPartial),
RollRows?, IF( ISOMITTED( RollRows?), ROW() <> @ROW(Array), RollRows?),
// Define Rolling Function
fnRollRow, LAMBDA( Row, Size, Offset, AllowPartial, Function,
LET(
Elements, COLUMNS( Row),
Counter, SEQUENCE( , Elements),
Result, MAP( Counter,
LAMBDA( n,
LET(
Left, n + Offset,
Right, Left + Size - 1,
Window, DROP( TAKE( Row, , Right) , , MAX( 0, Left - 1)),
//Window, OFFSET( Row, 0, MAX( 0, n + offset), 1, Size + MIN(0, n),//
Result, IF( OR( Right < 1, Left > Elements),
NA(),
IF( AND( NOT( AllowPartial), OR(Right > Elements, Left < 1)),
NA(),
IF( ISOMITTED( Function),
SUM( Window),
Function( Window)
)
)
),
Result
)
)
),
Result
)
),
Result, IF( Help?,
Help,
LET(
// Procedure
Counter, SEQUENCE( IF( RollRows?, ROWS( Array), COLUMNS( Array))),
Result, REDUCE(0, Counter,
LAMBDA(Acc,n,
LET(
Row, IF( RollRows?, CHOOSEROWS( Array, n) , TRANSPOSE( CHOOSECOLS( Array, n))),
Roll, fnRollRow( Row, Size, Offset, AllowPartial, Function),
Rolled, IF( RollRows?, Roll, TRANSPOSE( Roll)),
Result, IF( n = 1, Rolled, IF( RollRows?, VSTACK( Acc, Rolled), HSTACK( Acc, Rolled))),
Result
)
)
),
Result
)
),
Result
)
);
/* FUNCTION NAME: RollAvgλ
DESCRIPTION:*//**Average a rolling window over a row. Same as Rollingλ( Row, Size, Offset, AllowPartial, AVERAGE)*/
/* REVISIONS: Date Developer Description
May 29 2025 Craig Hatmaker Copyright
Nov 04 2025 Craig Hatmaker Made RollRows? position aware
*/
RollAvgλ = LAMBDA(
// Parameter Declarations
[Array],
[Size],
[Offset],
[AllowPartial],
[RollRows?],
LET(
// Help
Help, TRIM(TEXTSPLIT(
"FUNCTION: →RollAvgλ(Array, [Size], [Offset], [AllowPartial])¶" &
"DESCRIPTION: →Average a rolling window over a row.¶" &
"→ Same as Rollingλ( Row, Size, Offset, AllowPartial, AVERAGE)¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-rollminmaxavg%CE%BB¶" &
"VERSION: →BXL: May 29 2025¶" &
"PARAMETERS: →¶" &
" Array →(Required) An array to roll a window over.¶" &
" Size →(Optional) Window's size (number of values). Must be > 0. Default = 3.¶" &
" Offset →(Optional) Number of values after (+) or prior (-) current position. Default = -2.¶" &
" AllowPartial →(Optional) TRUE (Default) = Apply function to window that starts or ends¶" &
"→ outside the array (the window will be smaller than Size).¶" &
"→ FALSE = Do not apply function when window starts or ends outside array.¶" &
" RollRows? →(Optional) TRUE or 1 = Rolling proceeds horizontally by row.¶" &
"→ FALSE or 0 = Rolling proceeds Vertically by column. Default=TRUE",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, ISOMITTED( Array),
Result, IF( Help?,
Help,
LET(
// Check inputs - Set optional arguments' defaults
Size, IF( ISOMITTED( Size), 3, Size),
Offset, IF( ISOMITTED( Offset), -2, Offset),
AllowPartial, IF( ISOMITTED( AllowPartial), TRUE, AllowPartial),
RollRows?, IF( ISOMITTED( RollRows?), ROW() <> @ROW(Array), RollRows?),
// Procedure
Result, Rollingλ( Array, Size, Offset, AllowPartial, AVERAGE, RollRows?),
Result
)
),
Result
)
);
/* FUNCTION NAME: RollMaxλ
DESCRIPTION:*//**Find the maximum value in a rolling window over a row. Same as Rollingλ( Row, Size, Offset, AllowPartial, MAX)*/
/* REVISIONS: Date Developer Description
May 29 2025 Craig Hatmaker Copyright
Nov 04 2025 Craig Hatmaker Made RollRows? position aware
*/
RollMaxλ = LAMBDA(
// Parameter Declarations
[Array],
[Size],
[Offset],
[AllowPartial],
[RollRows?],
LET(
// Help
Help, TRIM(TEXTSPLIT(
"FUNCTION: →RollMaxλ(Array, [Size], [Offset], [AllowPartial])¶" &
"DESCRIPTION: →Find the maximum value in a rolling window over a row.¶" &
"→ Same as Rollingλ( Row, Size, Offset, AllowPartial, MAX)¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-rollminmaxavg%CE%BB¶" &
"VERSION: →BXL: May 29 2025¶" &
"PARAMETERS: →¶" &
" Array →(Required) An array to roll a window over.¶" &
" Size →(Optional) Window's size (number of values). Must be > 0. Default = 3.¶" &
" Offset →(Optional) Number of values after (+) or prior (-) current position. Default = -2.¶" &
" AllowPartial →(Optional) TRUE (Default) = Apply function to window that starts or ends¶" &
"→ outside the array (the window will be smaller than Size).¶" &
"→ FALSE = Do not apply function when window starts or ends outside array.¶" &
" RollRows? →(Optional) TRUE or 1 = Rolling proceeds horizontally by row.¶" &
"→ FALSE or 0 = Rolling proceeds Vertically by column. Default=TRUE",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, ISOMITTED( Array),
Result, IF( Help?,
Help,
LET(
// Check inputs - Set optional arguments' defaults
Size, IF( ISOMITTED( Size), 3, Size),
Offset, IF( ISOMITTED( Offset), -2, Offset),
AllowPartial, IF( ISOMITTED( AllowPartial), TRUE, AllowPartial),
RollRows?, IF( ISOMITTED( RollRows?), ROW() <> @ROW(Array), RollRows?),
// Procedure
Result, Rollingλ( Array, Size, Offset, AllowPartial, MAX, RollRows?),
Result
)
),
Result
)
);
/* FUNCTION NAME: RollMinλ
DESCRIPTION:*//**Find the minimum value in a rolling window over a row. Same as Rollingλ( Row, Size, Offset, AllowPartial, MIN)*/
/* REVISIONS: Date Developer Description
May 29 2025 Craig Hatmaker Copyright
Nov 04 2025 Craig Hatmaker Made RollRows? position aware
*/
RollMinλ = LAMBDA(
// Parameter Declarations
[Array],
[Size],
[Offset],
[AllowPartial],
[RollRows?],
LET(
// Help
Help, TRIM(TEXTSPLIT(
"FUNCTION: →RollMinλ(Array, [Size], [Offset], [AllowPartial])¶" &
"DESCRIPTION: →Find the minimum value in a rolling window over a row.¶" &
"→ Same as Rollingλ( Row, Size, Offset, AllowPartial, MIN)¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-rollminmaxavg%CE%BB¶" &
"VERSION: →BXL: May 29 2025¶" &
"PARAMETERS: →¶" &
" Array →(Required) An array to roll a window over.¶" &
" Size →(Optional) Window's size (number of values). Must be > 0. Default = 3.¶" &
" Offset →(Optional) Number of values after (+) or prior (-) current position. Default = -2.¶" &
" AllowPartial →(Optional) TRUE (Default) = Apply function to window that starts or ends¶" &
"→ outside the array (the window will be smaller than Size).¶" &
"→ FALSE = Do not apply function when window starts or ends outside array.¶" &
" RollRows? →(Optional) TRUE or 1 = Rolling proceeds horizontally by row.¶" &
"→ FALSE or 0 = Rolling proceeds Vertically by column. Default=TRUE",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, ISOMITTED( Array),
Result, IF( Help?,
Help,
LET(
// Check inputs - Set optional arguments' defaults
Size, IF( ISOMITTED( Size), 3, Size),
Offset, IF( ISOMITTED( Offset), -2, Offset),
AllowPartial, IF( ISOMITTED( AllowPartial), TRUE, AllowPartial),
RollRows?, IF( ISOMITTED( RollRows?), ROW() <> @ROW(Array), RollRows?),
// Procedure
Result, Rollingλ( Array, Size, Offset, AllowPartial, MIN, RollRows?),
Result
)
),
Result
)
);
/* FUNCTION NAME: RollSumλ
DESCRIPTION:*//**Total a rolling window over a row. Same as Rollingλ( Row, Size, Offset, AllowPartial, SUM)*/
/* REVISIONS: Date Developer Description
May 29 2025 Craig Hatmaker Copyright
Nov 04 2025 Craig Hatmaker Made RollRows? position aware
*/
RollSumλ = LAMBDA(
// Parameter Declarations
[Array],
[Size],
[Offset],
[AllowPartial],
[RollRows?],
LET(
// Help
Help, TRIM(TEXTSPLIT(
"FUNCTION: →RollSumλ(Array, [Size], [Offset], [AllowPartial])¶" &
"DESCRIPTION: →Average a rolling window over a row.¶" &
"→ Same as Rollingλ( Row, Size, Offset, AllowPartial, SUM)¶" &
"WEBPAGE: →https://sites.google.com/site/beyondexcel/home/5g-modeling/¶" &
"→5g-component-libraries/5g-array-essentials-library/5g-rolling%CE%BB¶" &
"VERSION: →BXL: May 29 2025¶" &
"PARAMETERS: →¶" &
" Array →(Required) An array to roll a window over.¶" &
" Size →(Optional) Window's size (number of values). Must be > 0. Default = 3.¶" &
" Offset →(Optional) Number of values after (+) or prior (-) current position. Default = -2.¶" &
" AllowPartial →(Optional) TRUE (Default) = Apply function to window that starts or ends¶" &
"→ outside the array (the window will be smaller than Size).¶" &
"→ FALSE = Do not apply function when window starts or ends outside array.¶" &
" RollRows? →(Optional) TRUE or 1 = Rolling proceeds horizontally by row.¶" &
"→ FALSE or 0 = Rolling proceeds Vertically by column. Default=TRUE",
"→", "¶"
)
),
// Check inputs - Omitted required arguments
Help?, ISOMITTED( Array),
Result, IF( Help?,
Help,
LET(
// Check inputs - Set optional arguments' defaults
Size, IF( ISOMITTED( Size), 3, Size),
Offset, IF( ISOMITTED( Offset), -2, Offset),
AllowPartial, IF( ISOMITTED( AllowPartial), TRUE, AllowPartial),
RollRows?, IF( ISOMITTED( RollRows?), ROW() <> @ROW(Array), RollRows?),
// Procedure
Result, Rollingλ( Array, Size, Offset, AllowPartial, SUM, RollRows?),
Result
)
),
Result
)
);
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