`dataFrame.column.stat — cumProp()`

Description

The cumProp() method of the stat object returns an array containing the cumulative proportions of the values in the selected column.

Signature

dataFrame.column(columnName).stat.cumProp()

Scope: column
Family: stat
Returns: array

Argument

columnName (string): The name of the column from which to calculate the cumulative proportions.

Returns

mask ( number[] ): An array containing the cumulative proportions.

Example

// get cumulative proportions from values of a column of the dataFrame
var mask = dataFrame.column('revenue').stat.cumProp();

// add the proportions to the dataFrame
dataFrame.column('proportions').set(mask);