Created
February 13, 2025 21:18
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This Excel LAMBDA functions enables simultaneous row and column filtering as well as 2D include arrays
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IFOMITTED = LAMBDA(arg, then, IF(ISOMITTED(arg),then,arg)); | |
// Collapse a boolean array to a boolean vector | |
COLLAPSE = LAMBDA( | |
array, | |
[collapse_with], // AND (default) or OR | |
[collapse_to], // 0 (default) = column or 1 = row | |
IF(collapse_to=0,BYROW,BYCOL)(array,IFOMITTED(collapse_with, AND)) | |
); | |
// Filter both rows and columns at the same time | |
// allow 2D include arrays along both dimensions | |
FILTER.2D = LAMBDA( | |
data, | |
[include_rows], | |
[include_cols], | |
[collapse_rows_with],// AND (default) or OR | |
[collapse_cols_with],// AND (default) or OR | |
LET( | |
_include_rows, IFOMITTED( | |
include_rows, | |
EXPAND({TRUE},ROWS(data),1,TRUE) | |
), | |
_include_cols, IFOMITTED( | |
include_cols, | |
EXPAND({TRUE},1,COLUMNS(data),TRUE) | |
), | |
_collapse_rows_with, IFOMITTED(collapse_rows_with,AND), | |
_collapse_cols_with, IFOMITTED(collapse_cols_with,AND), | |
_collapsed_include_rows, COLLAPSE(_include_rows,_collapse_rows_with), | |
_collapsed_include_cols, COLLAPSE(_include_cols,_collapse_cols_with,1), | |
FILTER(FILTER(data,_collapsed_include_rows),_collapsed_include_cols) | |
) | |
); |
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