`dataFrame.column.compare — isEven()`

Description

The isEven() method of the compare object returns a boolean mask indicating which values are even numbers.

Signature

dataFrame.column(columnName).compare.isEven()

Scope: column
Family: compare
Returns: mask

Argument

columnName (string): The name of the column to compare values from.

Returns

mask ( boolean[] )

A boolean mask indicating the rows whose values are even numbers.

Even value: 1
Otherwise: 0

Example

// get the mask of rows where the column 'age' is even
var mask = df.column('age').compare.isEven();

// set mask to dataFrame
df.column('age_even').set(mask);