topic Re: what is difference between (. ne chg) and (chg ne .)? in New SAS User

what is difference between (. ne chg) and (chg ne .)?

yogita_patel — Fri, 23 Feb 2024 17:15:20 GMT

Hello, I was wondering what is difference between (. ne chg) and (chg ne .). as i am getting different results while i use this condition vise versa.

Re: what is difference between (. ne chg) and (chg ne .)?

ballardw — Fri, 23 Feb 2024 17:35:38 GMT

You would have to provide example data and exact complete code to determine why you get different results.

Possibly including the LOG where you get the different results.

The most likely cause I would think of is incorrect use of "ne ." with a character variable.

The MISSING function is there for a reason: Not missing(chg) would be a better approach and doesn't care if the variable CHG is character or numeric.

Re: what is difference between (. ne chg) and (chg ne .)?

Rick_SAS — Sun, 25 Feb 2024 11:19:14 GMT

There should be no difference between those two logical expressions, so the issue must be related to either data or the way that you are using the expressions.

Here is an example of using each of the two expressions. You can see that they give the same logical result (0 or 1) for the inputs in this example:

data Have;
input chg @@;
MissFist   = (. ne chg);
MissSecond = (chg ne .);
datalines;
-1 0 . 1 2 .A 
;

proc print; run;

Please post your example where you claim to obtain different results.

Re: what is difference between (. ne chg) and (chg ne .)?

yabwon — Sun, 25 Feb 2024 14:03:21 GMT

No data, no answer.

Without data... just an opinion. My opinion is: in SAS these are equivalent logical conditions which results the same.

Bart