Hello, how would I keep the first two observations conditioned upon it being the first observation of 2 variables?
For example, I have:
ID Year Month Time
1 95 1 1
1 95 1 2
1 95 1 3
1 95 2 1
1 95 2 2
1 95 2 3
1 95 2 4
1 96 3 1
1 96 3 2
1 96 3 3
And need:
ID Year Month Time
1 95 1 1
1 95 1 2
1 95 2 1
1 95 2 2
1 96 3 1
1 96 3 2
I've found how this can be achieved conditional upon the first 2 observations of one variable:
data top2(drop=count);
set groups;
by group descending amount;
if first.group then count=0;
count+1;
if count le 2 then output;
run;
But I can't seem to find out how to do it conditioned upon the first 2 observations of 2 variables. I've tried adding a second first.var, but this doesn't seem to work.
I'm using SAS Studio. Thank you.
Your code looks good . just change a little thing.
data top2(drop=count);
set groups;
by ID Year Month;
if first.Month then count=0;
count+1;
if count le 2 then output;
run;
Your code looks good . just change a little thing.
data top2(drop=count);
set groups;
by ID Year Month;
if first.Month then count=0;
count+1;
if count le 2 then output;
run;
You may also try the proc sql method
proc sort data=have;
by id year month time;
run;
proc sql;
create table test(where=(s<=2)) as select *, (monotonic()-min(monotonic())+1) as s from have
group by id,year,month
order by id, year, month,time ;
quit;
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!
Need to connect to databases in SAS Viya? SAS’ David Ghan shows you two methods – via SAS/ACCESS LIBNAME and SAS Data Connector SASLIBS – in this video.
Find more tutorials on the SAS Users YouTube channel.