topic creating dummies (automatically) in SAS Procedures

creating dummies (automatically)

jkf91 — Fri, 28 Oct 2011 14:23:36 GMT

I have data with month variable. For each month, I want to create a dummy variable. Can someone tell me how I can do this automatically?

I think teh following should do the job, but it doesn't. Anyone knows why?

THanks,

DATA auto3;

set auto3;

ARRAY dummys {*} 8. month_1 - month_12;

DO i=1 TO 12;

dummys(i) = 0;

END;

dummys(month) = 1;

RUN;

art297 — Fri, 28 Oct 2011 14:32:06 GMT

You will have to post what auto3 initially looks like and be more specific about what you want to achieve.

The way your code is written, the twelve variables month_1-month_12 would have to already exist. You may be looking for something like:

DATA auto3;

set auto3;

ARRAY month_ {12};

DO i=1 TO 12;

month_(i) = ifn(i=month,1,0);

END;

RUN;

jkf91 — Fri, 28 Oct 2011 15:00:56 GMT

thnak you! you got it.

data_null__ — Fri, 28 Oct 2011 18:11:04 GMT

What if you don't know how many levels and/or you have many variables?

MikeZdeb — Fri, 28 Oct 2011 19:33:21 GMT

Hi ... maybe you can skip the loop and only change one value per observation (doesn't answer _null_'s question) ...

data auto3;

array month_(12) (12*0);

set auto3;

month_(month) = 1;

output;

month_(month) = 0;

run;

data_null__ — Sat, 29 Oct 2011 01:37:22 GMT

The answer to my question is PROC TRANSREG or PROC GLMMOD. :smileyplain: