topic Not recognizing negative number when converting to sas missing in SAS Studio

Not recognizing negative number when converting to sas missing

Sassybanana — Tue, 19 Oct 2021 04:56:34 GMT

Data tagline1;

Set tagline;

If var1 = -3 then varnew = .;
run;
When attempting to run this it does not identify -3 as sas missing includes it within the output.

Re: Not recognizing negative number when converting to sas missing

Patrick — Tue, 19 Oct 2021 05:27:29 GMT

This code will do as you tell it to do. What exactly is not working as you'd expect?

Assuming you create varnew in your data step and it doesn't already exist in table tagline:

You never assign a value to varnew so it will always be missing whether the condition is now true or not.

Re: Not recognizing negative number when converting to sas missing

Sassybanana — Tue, 19 Oct 2021 05:38:59 GMT

Here is the code. When a proc freq is ran the -3 values are still included within the new variable 1.

Re: Not recognizing negative number when converting to sas missing

Astounding — Tue, 19 Oct 2021 05:40:02 GMT

Your program does not change VAR1. So -3 would remain in the data. Did you intend to code:

if var1 = -3 then var1 = .;

Re: Not recognizing negative number when converting to sas missing

Kurt_Bremser — Tue, 19 Oct 2021 06:11:42 GMT

Please post code by copy/pasting it into a code box. No need to create nigh-unreadable pictures.

A code box is opened with the "little running man" button right next to the one indicated:

The indicated button is for logs.

Re: Not recognizing negative number when converting to sas missing

Patrick — Tue, 19 Oct 2021 06:42:21 GMT

In your code whenever tagline = -3 is true then tagline <40 will be true as well. And because this is not an IF/ELSE construct the last test wins and tagline_new will be set to 1 for cases where tagline = -3.