topic Re: previous versus current value in SAS Procedures

previous versus current value

Miracle — Fri, 07 May 2010 04:03:07 GMT

Hi all SAS users.

This may seem easy but I dunno how to do it. Could anyone please give me some guidance? I would like to know if the current "A" value is less than its previous value. if so, then flag=1.
ID A
1 1
1 -0.5
1 -0.6
1 2
2 3
2 4
2 1
2 5

so the result is
ID A flag
1 1 0
1 -0.5 1
1 -0.6 1
1 2 0
2 3 0
2 4 0
2 1 1
2 5 0

Thanks in advance. Have a great weekend.

Re: previous versus current value

sbb — Fri, 07 May 2010 05:17:21 GMT

Check out the LAG function for use in a SAS DATA step.

Scott Barry
SBBWorks, Inc.

Re: previous versus current value

Miracle — Fri, 07 May 2010 06:09:29 GMT

Thanks Scott!! Problem's solved. Have a good weekend.