dataFrame.rows — chunks()

The chunks() method of the rows object returns an array assigning each row to a chunk of the specified size.

dataFrame.rows.chunks(size)

Scope

dataFrame

Family

rows

Returns

array

size (number)

The maximum number of rows per chunk.

mask ( number[] )

An array containing the chunk index assigned to each row.

// get the chunks for a given dataFrame
var mask = df.rows.chunks(10);

// set a new column with the chunks indexes
dataFrame.column('chunk').set(mask);