Sample
Keep n rows, chosen arbitrarily but the same ones each run.
Keeps n rows by ordering on a hash of the whole row and taking the first n. That is arbitrary rather than random, and it is already repeatable — the same rows come back every run without a seed. Setting one only picks a different arbitrary subset.
At a glance
Module type
Sample
Category
Primitives · Dataframe
Default tier
reactive
Runs on
reactive, durable
Starts a flow
no
Holds a body
no
Keeps state between runs
no
Available in
every application type
Parameters
n
number · required · defaults to 1000
How many rows to draw.
seed
number | null · required · defaults to null
Picks which arbitrary subset is taken. Null is not "unseeded" — it hashes as 0, and repeats like any other value.
Inputs
on
event
no
Implicit on every module that does not itself start a flow: wire an event here to make this module the start of what that event runs.
data
dataframe
yes
The frame to work on.
Outputs
output
dataframe
dataframe, signal
At most n rows, the same ones each run for a given frame and seed.
Last updated