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Ihsan-Mahdi
Quartz | Level 8

Hello,

I have a data set that looks something like this:

DATA example;
INPUT id ais;
DATALINES;
1 3
1 4
2 5
2 7
2 3
3 2
3 4
3 1
;
run;

I would like to square each "ais" value, then add the squares by each "id" value creating a new variable called "iss".

so for "id" (1) the iss should equal 9+16=25.

I tried different codes but none worked. Help please!

1 ACCEPTED SOLUTION

Accepted Solutions
Tom
Super User Tom
Super User

Assuming you want to output 3 observations, one per BY group, then something like this should do the job.

data want;
  do until(last.id);
    set example;
    by id;
    iss = sum(iss,ais**2);
  end;
  keep id iss;
run;

 

View solution in original post

3 REPLIES 3
PaigeMiller
Diamond | Level 26

This is a job for PROC SUMMARY. No need to write your own DATA step code with a mathematical formula.

 

proc summary data=example nway;
    class id;
    var ais;
    output out=want uss=sum_of_squares;
run;

 

--
Paige Miller
Tom
Super User Tom
Super User

Assuming you want to output 3 observations, one per BY group, then something like this should do the job.

data want;
  do until(last.id);
    set example;
    by id;
    iss = sum(iss,ais**2);
  end;
  keep id iss;
run;

 

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