Hi,
I want to keep all row after the first non-missing value row (including this first non-missing row)
For the data below, I want to keep:
3 1 2
4 1 .
5 1 3
and
2 2 2
3 2 .
Can you please help?
Thank you,
HHC
data have;
input date id value;
datalines;
1 1 .
2 1 .
3 1 2
4 1 .
5 1 3
1 2 .
2 2 2
3 2 .
;run;
Use a RETAINed flag:
data want;
set have;
by id;
retain flag;
if first.id then flag = 0;
if value ne . then flag = 1; /* alternatively: flag = flag or (value ne .) */
if flag;
drop flag;
run;
Use a RETAINed flag:
data want;
set have;
by id;
retain flag;
if first.id then flag = 0;
if value ne . then flag = 1; /* alternatively: flag = flag or (value ne .) */
if flag;
drop flag;
run;
Thank you!
HHC
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