topic Re: expanding records in SAS Procedures

expanding records

jpapakro — Fri, 24 Aug 2012 00:14:07 GMT

Hi everybody,

I need help with coding an expansion in my records but I don't know where to start from. So I have the data in the following format:

fyear anndat revdat forecast analyst

12/31/2000 01/31/2000 01/31/2000 10 a

12/31/2000 01/20/2000 02/10/2000 5 b

12/31/2000 01/20/2000 04/18/2000 4 c

I want to have the following table where each of the records is expanded for the number of periods (months) between anndat and revdat.

fyear anndat revdat forecast analyst transaction monthyear

12/31/2000 01/31/2000 01/31/2000 10 a 1 01/2000

12/31/2000 01/20/2000 02/10/2000 5 b 2 01/2000

12/31/2000 01/20/2000 02/10/2000 5 b 2 02/2000

12/31/2000 01/20/2000 04/18/2000 4 c 3 01/2000

12/31/2000 01/20/2000 04/18/2000 4 c 3 02/2000

12/31/2000 01/20/2000 04/18/2000 4 c 3 03/2000

12/31/2000 01/20/2000 04/18/2000 4 c 3 04/2000

Any help is appreciated at this point! Thanks a lot in advance

Re: expanding records

Linlin — Fri, 24 Aug 2012 00:37:06 GMT

data have;

informat fyear anndat revdat mmddyy10.;

input fyear anndat revdat forecast analyst $;

cards;

12/31/2000 01/31/2000 01/31/2000 10 a

12/31/2000 01/20/2000 02/10/2000 5 b

12/31/2000 01/20/2000 04/18/2000 4 c

;

data want;

set have;

do _n_=1 to intck('month',anndat,revdat)+1;

monthyear=intnx('month',anndat,_n_-1);

output;

end;

format fyear anndat revdat mmddyy10. monthyear mmyys7. ;

proc print;run;

Obs fyear anndat revdat forecast analyst monthyear

1 12/31/2000 01/31/2000 01/31/2000 10 a 01/2000

2 12/31/2000 01/20/2000 02/10/2000 5 b 01/2000

3 12/31/2000 01/20/2000 02/10/2000 5 b 02/2000

4 12/31/2000 01/20/2000 04/18/2000 4 c 01/2000

5 12/31/2000 01/20/2000 04/18/2000 4 c 02/2000

6 12/31/2000 01/20/2000 04/18/2000 4 c 03/2000

7 12/31/2000 01/20/2000 04/18/2000 4 c 04/2000

Re: expanding records

PGStats — Fri, 24 Aug 2012 00:52:37 GMT

It seems transaction should be 4 for the last group :

data have;
format fyear anndat revdat mmddyy10.;
input (fyear anndat revdat) (:mmddyy10.) forecast analyst $;
datalines;
12/31/2000     01/31/2000     01/31/2000          10          a
12/31/2000     01/20/2000     02/10/2000          5            b
12/31/2000     01/20/2000     04/18/2000          4            c
;

data want(drop=i);
set have;
transaction = intck("MONTH", anndat, revdat) + 1;
format monthYear MMYYS7.;
monthyear = anndat;
do i = 1 to transaction;
     output;
     monthyear = intnx("MONTH",monthyear,1,"SAME");
     end;
run;

proc print; run;

Re: expanding records

jpapakro — Fri, 24 Aug 2012 01:21:57 GMT

Hi PGStats,

Thank you very much for the prompt response. 'transaction' is not that important. I just put it there to show that each record is repeated for a certain number of periods. I see your point though, cos' I think you understood that transaction means the number of expanded records.

In any case the code works and I am grateful

Re: expanding records

jpapakro — Fri, 24 Aug 2012 01:22:37 GMT

Hi Linlin,

Thanks a lot for the code! I really appreciate your help!