topic Re: help in coding in SAS Procedures

help in coding

deleted_user — Sun, 23 May 2010 21:27:24 GMT

I've a dataset similar to:
A B C D
a1 b1 red .
a1 b1 blue .
a1 b1 gren .
a1 b1 yellow 123
a1 b2 white .
a1 b2 red .
a1 b2 blue .
a1 b2 green 456
a1 b2 white .

I am looking for output similar to :

A B C D
a1 b1 red 123
a1 b1 blue 123
a1 b1 gren 123
a1 b1 yellow 123
a1 b2 white 456
a1 b2 red 456
a1 b2 blue 456
a1 b2 green 456
a1 b2 white 456

Thanks

Re: help in coding

sbb — Sun, 23 May 2010 22:02:48 GMT

Consider using PROC SQL with a JOIN or use DATA step (with sorted input files) and the MERGE with a BY statement. Check the SAS DOC or you can find useful reference material at the SAS support http://support.sas.com/ website.

Also, you need only post in one (1) forum for this type of query.

Scott Barry
SBBWorks, Inc. Message was edited by: sbb

Re: help in coding

Ksharp — Mon, 24 May 2010 11:43:59 GMT

I think sbb has got the right idea here.
It looks like each b group has the same d value , is it right?
if it is. the code is

[pre]
data temp;
input a $ b $ c $ d ;
datalines;
a1 b1 red .
a1 b1 blue .
a1 b1 gren .
a1 b1 yellow 123
a1 b2 white .
a1 b2 red .
a1 b2 blue .
a1 b2 green 456
a1 b2 white .
;
run;
data index;
set temp;
if not missing(d);
keep b d;
run;
proc sort data=temp;
by b;
run;
proc sort data=index;
by b;
run;
data merged;
merge temp(drop = d) index;
by b;
run;
proc print;
run;
[/pre]

Ksharp

Re: help in coding

P_J — Mon, 24 May 2010 19:55:58 GMT

Hope codes below would help,

data temp;
input a $ b $ c $ d ;
datalines;
a1 b1 red .
a1 b1 blue .
a1 b1 gren .
a1 b1 yellow 123
a1 b2 white .
a1 b2 red .
a1 b2 blue .
a1 b2 green 456
a1 b2 white .
;;;;
run;

proc sort data= temp;
by a b descending d;
run;

data want(drop=dd);
set temp;
by a b descending d;
retain dd;
if first.b then dd= d;
else d =dd;
run;

Re: help in coding

deleted_user — Mon, 24 May 2010 23:40:53 GMT

Thanks everyone for your help ! I really appreciate you guys.