topic Can we replace macro variable. in SAS Programming

Can we replace macro variable.

anitapamu2 — Thu, 21 May 2015 07:39:48 GMT

/*************** macro varaiable *********************/

% let refvar = AEENDT ;

/********************* creating new variable =AEENDY *******************/

data works._RefDate_;

set _RefDate_;

RFSTDTC =input ( RFSTDTC ,YYMMDD10.);

if &refvar. le RFSTDTC then AEENDY = &refvar. - RFSTDTC + 1;

if &refvar. ge RFSTDTC then AEENDY = &refvar. - RFSTDTC ;

run;

The macro varaible AEENDT has suffix "DT" DT should be place by "DY"... and create the new variable.. " In the above code i have hard code the new variable name "AEENDY ".""

Re: Can we replace macro variable.

LinusH — Thu, 21 May 2015 07:46:56 GMT

Not sure what kind of dynamics you want, but can't you just use &refvar instead of the hard code variable name?

Re: Can we replace macro variable.

RW9 — Thu, 21 May 2015 08:22:31 GMT

Hi,

Why do you want to put the variable name in a macro variable at all, I don't see any benefit? All your doing is complicating the code. If you really really have to use macro then put the base part of the variable in the macro and then append the additional part:

% let refvar = AEEN ;

/********************* creating new variable =AEENDY *******************/

data works._RefDate_;

set _RefDate_;

RFSTDTC =input ( RFSTDTC ,YYMMDD10.);

if &refvar.DT le RFSTDTC then &refvar.DY = &refvar.DT - RFSTDTC + 1;

if &refvar.DT ge RFSTDTC then &refvar.DY = &refvar.DT - RFSTDTC ;

run;

Again though, this oesn't add any value, so why bother?