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// Fractured pieces are generated with @name such as 'piece0', 'piece1', etc.
// The following prim wrangle renames each piece with a padded number.

// String var to hold padded piece number.
string new_name = sprintf("piece_%04d", opdigits(@name));
// Update piece name.
s@name = new_name;

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// Static Values
variable = {0,1,2};

// Dynamic Values
variable = set(x,y,z);

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// Replace <value> with value intended to be rounded.
round(<value> * 1000) / 1000

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Add subscript with the <sub></sub> tags.

n_i

k_ni

Add superscript with the <sup></sup> tags.

x²

morphingdesign

# Extract consecutive trailing numerical digits from a node's name.
import hou
return pwd().digitsInName()

# For example, a node named 'NEW_GEO_101' will return the int 101
# into the field. Returns 0 if name does not include any trailing
# numerical digits.

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//Convert integer to string
s@string_attribute = itoa(i@int_attribute);

//Convert string to integer
i@int_attribute = atoi(s@string_attribute);

//Convert string to float
f@float_attribute = atof(s@string_attribute);

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# Access panes in the current Houdini desktop using the
# the hou.ui class with/out the hou.Desktop class.
panes = hou.ui.currentPaneTabs()
panes = hou.ui.curDesktop().currentPaneTabs()
(<hou.NetworkEditor panetab1>, <hou.PythonShell panetab2>)

# View current setting for each available preference for
# the selected Network Editor pane.
pane = panes[0]
pane.getPrefs()

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// Base formatting:
// Curly brackets for encapsulating multiple statements.
if([email protected] > 0){
    v@Cd = {1, 0, 0};
}
else{
    v@Cd = {0, 1, 0};
}

// Inline formatting:

morphingdesign

rotateNode = hou.node('obj/box1/transform1')
speed = 20
# set() used to specify param value with corresponding data type.
rotateNode.parm('rz').set(10)
# However, it cannot be used to set the value with a non-compatible
# data type, such as a string channel reference. The use of
# setExpression() allows for such instances.
rotateNode.parm('ry').setExpression('ch("../box1/divrate2") * {}'.format(speed))
# Reference: https://www.sidefx.com/docs/houdini/hom/hou/Parm.html

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// Set Wrangle to 'Run Over Points'.

// Collect closest pts for each pt, based on radius and max pts.
// Includes user-managed channels for radius and max pts.
// Note that this list will include the current point being run
// through this point wrangle.
int pts[] = pcfind(0,"P",@P,chf('search_radius'),chi('max_points'));

// Used to visualize list in geo spreadsheet; for debugging.
i[]@pts = pts;