topic How to convert data set containing observation with start date and end date in to multiple monthly divided observations in SAS Enterprise Guide

How to convert data set containing observation with start date and end date in to multiple monthly divided observations

mrug12 — Thu, 29 Sep 2011 01:53:31 GMT

I have data set containing start date and end date.

I want to convert the data set into monthly divide basis.

So I want to convert each record in to multiple record devide according monthly basis.

I would like to have few suggestion as well papers if you can refer

How to convert data set containing observation with start date and end date in to multiple monthly divided observations

yonib — Fri, 30 Sep 2011 08:51:53 GMT

Hi mrug12,

Can you i provide an example of your source data and the way you want the resulting file to look

How to convert data set containing observation with start date and end date in to multiple monthly divided observations

mrug12 — Fri, 30 Sep 2011 16:13:20 GMT

Hii,

Here is example for the source data

x y z sdate edate

1 1 1 jan09 mar11

2 2 2 oct10 aug11

Now I want to convert it as below

x y z months

1 1 1 jan09

1 1 1 feb09

1 1 1 mar11

2 2 2 oct10

2 2 2 nov10

2 2 2 aug11

here is basic deatils for it

How to convert data set containing observation with start date and end date in to multiple monthly divided observations

Tom — Fri, 30 Sep 2011 16:45:15 GMT

You could write a data step to do this. Possibly you could also use proc expand.

Works easily if your EDATE and SDATE variables are actual SAS date values

data want;

set have;

format month date9.;

do i=0 by 1 while (month < edate) ;

month = intnx('month',sdate,i) ;

output;

end;

run;

Re: How to convert data set containing observation with start date and end date in to multiple monthly divided observations

data_null__ — Fri, 30 Sep 2011 17:25:20 GMT

I've been learning PROC EXPAND, trying at least. While this adds nothing to the solution posted by Tom it is mildly interesting to me.

It appears that PROC EXPAND needs a purpose other than expanding the obs, because without a numeric variable it prints the message.

NOTE: Nothing to do.

Here the variable "I" gives PROC EXPAND a purpose.

Note the data has to have start and end dates as observations.

data have;
   input x y z @;
   do i=1 to 2;
      input date :monyy. @;
      output;
      end;
   format date monyy.;
   cards;
1 1 1 jan09 mar11
2 2 2 oct10 aug11
;;;;
   run;
proc print;
   run;
proc expand to=month method=none;
   by x y z;
   id date;
   format date monyy.;
   run;
proc print;
   run;

Obs x y z date i

1 1 1 1 JAN09 1

2 1 1 1 FEB09 .

3 1 1 1 MAR09 .

4 1 1 1 APR09 .

5 1 1 1 MAY09 .

6 1 1 1 JUN09 .

7 1 1 1 JUL09 .

8 1 1 1 AUG09 .

9 1 1 1 SEP09 .

10 1 1 1 OCT09 .

11 1 1 1 NOV09 .

12 1 1 1 DEC09 .

13 1 1 1 JAN10 .

14 1 1 1 FEB10 .

15 1 1 1 MAR10 .

16 1 1 1 APR10 .

17 1 1 1 MAY10 .

18 1 1 1 JUN10 .

19 1 1 1 JUL10 .

20 1 1 1 AUG10 .

21 1 1 1 SEP10 .

22 1 1 1 OCT10 .

23 1 1 1 NOV10 .

24 1 1 1 DEC10 .

25 1 1 1 JAN11 .

26 1 1 1 FEB11 .

27 1 1 1 MAR11 2

28 2 2 2 OCT10 1

29 2 2 2 NOV10 .

30 2 2 2 DEC10 .

31 2 2 2 JAN11 .

32 2 2 2 FEB11 .

33 2 2 2 MAR11 .

34 2 2 2 APR11 .

35 2 2 2 MAY11 .

36 2 2 2 JUN11 .

37 2 2 2 JUL11 .

38 2 2 2 AUG11 2

How to convert data set containing observation with start date and end date in to multiple monthly divided observations

mrug12 — Fri, 30 Sep 2011 17:48:49 GMT

Thanks for the reply, It is also right way,but as you see i like tom's way it is more smaller code for all.

How to convert data set containing observation with start date and end date in to multiple monthly divided observations

mrug12 — Fri, 30 Sep 2011 17:49:56 GMT

Thanks Tom ,

It is really help full.