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Feb 11, 2017 12:41 PM
(422 views)

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

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Feb 11, 2017 1:51 PM
(417 views)

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