hello,
I have a large data set, look like this :
data mydata;
input id month mark last;
cards;
1 4 14.5 28
1 1 . .
1 3 . .
2 7 . .
;
run;
and I want to remplace all missing value by 14.5 and 28, I mean like this
ID month mark last
1 4 14.5 28
1 5 14.5 28
1 1 14.5 28
1 3 14.5 28
2 7 14.5 28
Thank you
ok, with automatically, I take it that you mean that you always have the nonmissing value in the first observation? 🙂
So
data want;
set mydata;
if _N_ = 1 then do;
temp_mark = mark;
temp_last = last;
retain temp_mark temp_last;
end;
if missing(mark) then mark=temp_mark;
if missing(last) then last = temp_last;
drop temp_mark temp_last;
run;
Like this?
data mydata;
input id month mark last;
cards;
1 4 14.5 28
1 1 . .
1 3 . .
2 7 . .
;
run;
data want;
set mydata;
if missing(mark) then mark=14.5;
if missing(last) then last = 28;
run;
Yes but since I have a large data set, I want to do it automatically
ok, with automatically, I take it that you mean that you always have the nonmissing value in the first observation? 🙂
So
data want;
set mydata;
if _N_ = 1 then do;
temp_mark = mark;
temp_last = last;
retain temp_mark temp_last;
end;
if missing(mark) then mark=temp_mark;
if missing(last) then last = temp_last;
drop temp_mark temp_last;
run;
Yes
data mydata;
input id month mark last;
cards;
1 4 14.5 28
1 1 . .
1 3 . .
2 7 . .
;
run;
data want;
set mydata(drop= mark last);
if _n_=1 then set mydata(keep= mark last obs=1);
run;
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 25. Read more here about why you should contribute and what is in it for you!
Learn how use the CAT functions in SAS to join values from multiple variables into a single value.
Find more tutorials on the SAS Users YouTube channel.