looping through variables

I think this has been addressed before, but I can't find it in the
archives.

I'm trying to loop through program variables using a list of the variable
names. One can read in file variables by using $filevar$, but this doesn't
work for program variables. How do I do the same thing with file
variables? The variables are all of type float. Code snippet below.

Thanks,
Nicole

Code snippet:
varname = [/"pr","pw","mfc","evap"/]
  do i=0,nvars-1 ;variables
  print(varname[i])
  calcdata = calc_stats(varname[i],region,nruns,nstat)
  end do ;variables

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* Nicole Schiffer
* Science Writing Intern (NCSA)
* Graduate Research Fellow (Dept. of Energy)
* Department of Atmospheric Sciences
* University of Illinois, Urbana-Champaign
* Email: nschiff2 [at] illinois [dot] edu
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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Received on Wed Oct 3 14:46:02 2012