Say I have a data set with 4 character variables: x1-x4.
The data looks something like: ab cd ab ca.
I want to compare each variable to the other. Therefore, I have 6 combinations. I am interested in the ones that match (i.e., x1 matches x3, 'ab').
So my output should contain 3 columns:
First and second columns list the variables being compared to each other (total of 6 rows due to 6 combinations).
The third column stating whether or not there is a match.
I know to calculate the number of combinations, I use: c42=comb(4,2).
I am stuck thereafter. Any suggestions?
OK, I have added one more variable 'num' to identify the original obs no., take it out as you wish.
data have;
input (x1-x4) (:$);
cards;
aa ab aa bd
dd cc dd cc
;
data want (keep=first second match num) ;
set have;
array xx $ x1-x4;
do _i=1 to dim(xx);
do _j=_i+1 to dim(xx);
first=vname(xx(_i));
second=vname(xx(_j));
if xx(_i)=xx(_j) then match='Y';
else match='N';
Num=_n_;
output;
end;
end;
run;
proc print;run;
Regards,
Haikuo
Thank you very much! That helped a lot and it was very straightforward! I was able to tweak it and fit it to a more complicated data set.
Thanks again!
Are you ready for the spotlight? We're accepting content ideas for SAS Innovate 2025 to be held May 6-9 in Orlando, FL. The call is open until September 16. Read more here about why you should contribute and what is in it for you!
Learn the difference between classical and Bayesian statistical approaches and see a few PROC examples to perform Bayesian analysis in this video.
Find more tutorials on the SAS Users YouTube channel.
Select SAS Training centers are offering in-person courses. View upcoming courses for: