topic Sampling data every n points in Discussions

Sampling data every n points

SPradh — Sat, 11 Feb 2017 20:41:45 GMT

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!

Re: Sampling data every n points

txnelson — Sat, 11 Feb 2017 22:27:19 GMT

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