log transformation

[asifgeneral]

Hi.

How can do a log transformation of a variable if the distribution is not symmetric. Is there a proc for that?

Thanks, Asif  

[ballardw]

You may want to describe more of what you are doing and where you need a transform, especially since you question references symmetry of distribution.

The basic data step function Log will transform values in the appropriate domain, best creating a new variable.

data want;
   set have;
   logvariable = log(variable);
run;