topic How to change variable name for multiple one in SAS Programming

How to change variable name for multiple one

Aayushi_17 — Fri, 30 Oct 2020 07:56:57 GMT

Hi i have variable names which have common variable like _high_va and _low_va like this

SODIUM_NHIGH_VA	POTASSIU_NHIGH_VA	CHLORIDE_NHIGH_VA	CARBDIOX_NHIGH_VA	SODIUM_NLOW_VA	POTASSIU_NLOW_VA	CHLORIDE_NLOW_VA	CARBDIOX_NLOW_VA
	53	26			30	56

i would like to change this as

SODIUM_HIGH for SODIUM_NHIGH_VA likewise for SODIUM_NLOW_VA as SODIUM_LOW which is the variable name and it has values

the output should look like this :

SODIUM_HIGH	POTASSIU_HIGH	CHLORIDE_HIGH	CARBDIOX_HIGH	SODIUM_LOW	POTASSIU_LOW	CHLORIDE_LOW	CARBDIOX_LOW
	53	26			30	56

please do suggest some alternative for this step.Thanks in advance

Re: How to change variable name for multiple one

gamotte — Fri, 30 Oct 2020 08:19:43 GMT

Hello,

data _NULL_;
    call execute('data want; set have; rename');
    do until(lastrow); 
        set sashelp.vcolumn end=lastrow;
        where libname="WORK" and memname="HAVE";
        call execute(cats(NAME,'=',tranwrd(NAME,'NHIGH_VA','HIGH')));
    end;
    call execute('; run;');
    stop;
run;

Re: How to change variable name for multiple one

andreas_lds — Fri, 30 Oct 2020 09:23:29 GMT

Using the code @gamotte suggest, i would only change the way the new name is build:

catx('_', scan(Name, 1), substr(scan(Name, 2), 2))

or a regex in prxchange:

prxchange("s/(.+_).(.+)_.*/$1$2/", 1, Name);