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sasphd
Lapis Lazuli | Level 10

Hello, 

I want to set three first observations to missing by id

 

Have 

id   mret

1     8

1    5

1   6

1   9

2   63

2    95

2  6

2   8

 

want 

id   mret

1     .

1    .

1   .

1   9

2   .

2    .

2  .

2   8

1 ACCEPTED SOLUTION

Accepted Solutions
PeterClemmensen
Tourmaline | Level 20

Try this

 

data have;
input id mret;
datalines;
1 8
1 5
1 6
1 9
2 63
2 95
2 6
2 8
;

data want(drop = c);
   set have;
   by id;
   if first.id then c = 0;
   c + 1;
   if c le 3 then mret = .;
run;

 

View solution in original post

1 REPLY 1
PeterClemmensen
Tourmaline | Level 20

Try this

 

data have;
input id mret;
datalines;
1 8
1 5
1 6
1 9
2 63
2 95
2 6
2 8
;

data want(drop = c);
   set have;
   by id;
   if first.id then c = 0;
   c + 1;
   if c le 3 then mret = .;
run;

 

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