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twildone
Pyrite | Level 9

Hi...I am having problems with incrementing a count. For each ID, starting at 1 and increment by 1 when their is a change in the Program type and retain the count and increment by 1 when there is another change in the Program type. Thanks.

 

DATA GROUP58B;

     SET GROUP58A;

     COUNT+1;

     RETAIN COUNT;

           BY ID;

                IF FIRST.ID THEN COUNT=1;

                IF ID = LAG(ID) AND PROGRAM = LAG(PROGRAM) THEN COUNT = 1;

RUN;

 

 

 

Have:

 

DATE ID PROGRAM COUNT
20130219 130439 HCP 1
20140121 130439 HCP 1
20140403 130439 HCP 1
20160314 130439 PCP 2
20160314 130439 PCP 1
20160415 130439 PCP

1

 

Want:

 

DATE ID PROGRAM COUNT
20130219 130439 HCP 1
20140121 130439 HCP 1
20140403 130439 HCP 1
20160314 130439 PCP 2
20160314 130439 PCP 2
20160415 130439 PCP 2
1 ACCEPTED SOLUTION

Accepted Solutions
Reeza
Super User

DATA GROUP58B; SET GROUP58A; COUNT+1; *wrong position, this would be the first step, move it later in the program; RETAIN COUNT; BY ID; IF FIRST.ID THEN COUNT=1; IF ID = LAG(ID) AND PROGRAM = LAG(PROGRAM) THEN COUNT = 1; *This doesn't make sense, its what you use first for to avoid checking previous values; RUN;

See comments in code above.

 

The code below should work

DATA GROUP58B;
     SET GROUP58A;

     RETAIN COUNT;
           BY ID PROGRAM;
                IF FIRST.ID THEN COUNT=0;
                if first.program then count+1;
 
RUN;

 

View solution in original post

1 REPLY 1
Reeza
Super User

DATA GROUP58B; SET GROUP58A; COUNT+1; *wrong position, this would be the first step, move it later in the program; RETAIN COUNT; BY ID; IF FIRST.ID THEN COUNT=1; IF ID = LAG(ID) AND PROGRAM = LAG(PROGRAM) THEN COUNT = 1; *This doesn't make sense, its what you use first for to avoid checking previous values; RUN;

See comments in code above.

 

The code below should work

DATA GROUP58B;
     SET GROUP58A;

     RETAIN COUNT;
           BY ID PROGRAM;
                IF FIRST.ID THEN COUNT=0;
                if first.program then count+1;
 
RUN;

 

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