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Sampling data every n points

SPradh

Community Member

Joined:

Feb 11, 2017

Hi everyone,

 

I am trying to sample data every 50 rows and check if values in a column, F, gives F(50)-F(1)>1. I don't want to use the lag function as it should only sample at row 1, 50, 100, 150 and so on.

 

Thanks in advance!

 

 

 

1 REPLY
txnelson

Super User

Joined:

Jun 22, 2012

Use the mod(), "modulus" function:

names default to here(1);
dt= current data table();
dt<<select where(mod(row(),50)==0);
dt << subset(selected rows(1),selected columns(0));

     Help==>Scripting Index==>Functions==>Mod 

Jim