sequence

[paddyb]

Hi 

I would like to apply basevalue .like if id is 13 then 1,if id is 14 then 2 but in my code I am getting basevalue increamented for same id.Can anyone guide with the code.

(if first.id then basevalue=1;

basevalue+1;

dataset I want is like this

ID BASEVALUE
13 1
13 1
13 1
14 2
14 2
15 3
15 3
15 3
16 4

[Astounding]

You're close ... combine your two statements:

if first.id then basevalue + 1;

[novinosrin · Accepted solution]

data have;
input ID ;
datalines;
13 1
13 1
13 1
14 2
14 2
15 3
15 3
15 3
16 4
;

data want;
set have;
by id;
if first.id then BASEVALUE+1;
run;

/*or*/

data want;
set have;
by id;
if lag(id) ne id then BASEVALUE+1;
run;

[paddyb]

Thank you 🙂