topic SAS macro; sysfunction; identifier auto increment in SAS Procedures

SAS macro; sysfunction; identifier auto increment

blakezen — Wed, 03 Aug 2016 21:54:28 GMT

Hi all,

I have a variable that gets incremented:

shock_number =1

shock_number=2

and so on. basically I manually increment dependent on adding a shock multiplier to each column. A selection:

_base_state=state;

state="FL"; shock_no=1; shock_desc="state=FL"; output;

state="CA"; shock_no=2; shock_desc="state=CA"; output;

state="NY"; shock_no=3; shock_desc="state=NY"; output

state=_base_state;

*as of date;

_base_aod=as_of_date;

as_of_date=intnx('month',as_of_date,1); shock_no=4; shock_desc="aod_+1mo"; output;

as_of_date=intnx('month',as_of_date,-2); shock_no=5; shock_desc="aod_-1mo"; output;

as_of_date=_base_aod;

And so on. I'm doing this shock entry for a hundren more columns. Instead of having to manually enter the shock_number for each new shock, is there a code snippet that would automatically pick up the last shock_no used and increment by 1?

Thank you very much in advance

Re: SAS macro; sysfunction; identifier auto increment

ballardw — Wed, 03 Aug 2016 22:20:12 GMT

It is not clear whether you need the value to persist from record to record.

It really helps to have begining input data and what the result should be. Please reduce the data to only what is needed to demonstrate the issue.

This link https://communities.sas.com/t5/SAS-Communities-Library/How-to-create-a-data-step-version-of-your-data-AKA-generate/ta-p/258712 has instructions on how to create datastep code that we can use to create a working data set to test code.

Re: SAS macro; sysfunction; identifier auto increment

Tom — Wed, 03 Aug 2016 22:26:59 GMT

If you want to increase the value of a variable by 1 then just add 1 to it.

shock_no=shock_no+1;

Re: SAS macro; sysfunction; identifier auto increment

blakezen — Thu, 04 Aug 2016 22:10:41 GMT

thanks very much for your insight!

Re: SAS macro; sysfunction; identifier auto increment

blakezen — Thu, 04 Aug 2016 22:10:53 GMT

thank you!