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Posts: 34

# Picking an observation from a group

Hello Everyone,

The Have dataset is sorted by ID and Ranks. For each group, by ID, I am trying to pick the first observation for which the difference is less than equal to 12. For example, for ID 0001, the Want dataset has the secon observation. Would really appreciate if anyone could help me out.

Thanks

 Have Want ID Rank Diff ID Rank Diff 0001 2 20 0001 3 8 0001 3 8 0001 4 44 0001 5 38 0002 2 18 0002 4 3 0002 4 3 0002 5 6 0002 12 30 0003 1 11 0003 1 11 0003 2 23 0003 3 47 0003 5 2

Accepted Solutions
Solution
‎07-29-2016 05:35 PM
Super User
Posts: 23,776

## Re: Picking an observation from a group

Create a flag that indicates if you've found the record. So your logic becomes less than or equal to 12 AND flag is not set.

``````data want;
set have;
by id;
retain flag;
if first.id then flag=0;

if diff<=12 and flag=0 then do;
output;
flag=1;
end;

run;``````

All Replies
Solution
‎07-29-2016 05:35 PM
Super User
Posts: 23,776

## Re: Picking an observation from a group

Create a flag that indicates if you've found the record. So your logic becomes less than or equal to 12 AND flag is not set.

``````data want;
set have;
by id;
retain flag;
if first.id then flag=0;

if diff<=12 and flag=0 then do;
output;
flag=1;
end;

run;``````
Contributor
Posts: 34

## Re: Picking an observation from a group

Thanks Reeza for the solution.

☑ This topic is solved.