sample() function

sample() selects a subset of the rows from each input table.

Note: sample() drops empty tables.

Function type signature

(<-tables: stream[A], n: int, ?column: string, ?pos: int) => stream[A] where A: Record

Parameters

n

(Required) Sample every Nth element.

pos

Position offset from the start of results where sampling begins. Default is -1 (random offset).

pos must be less than n. If pos is less than 0, a random offset is used.

column

Column to operate on.

tables

Input data. Default is piped-forward data (<-).

Examples

Sample every other result

import "sampledata"

sampledata.int()
    |> sample(n: 2, pos: 1)