On Fri, 18 Mar 2016, Schaff, Frederik wrote:
 Hello again,
 I tested the new silent and icon save options for "freq". There are 
 some issues:
 1) Saving to icons does not work in a loop at all
 2) The --silent option does not work correct in a loop -- only the 
 first iteration of the innermost loop will work.
 In both cases, no error message is printed. Nevertheless, it is not 
 too much of a pain to use it as it is now. It is great one can 
 produce frequency plots automated! Saving to .gp and hand-adding 
 some literals then (including a line to produce a .png, etc.) is not 
 that much work either. Many thanks! 
Thanks again for testing. I see what the problem is with --silent and 
I think things should now be OK in git and snapshots.
Allin