Hi 

I glanced at the plotting capabilities of Fricas in order to provide some 
basic functionality for the 'kernel'. Naturally, I also searched this list 
for any hints as I try to avoid reinventing the wheel. After all the matter 
is quite confusing to me. Thus I dare asking some questions:

a) Is there any strategy to refurbish graphics output? 
b) Is there any library which provides (file) output for some of the common 
plotting/viewing packages? E.g. GLE, Asymptote, Gnuplot, matplotlib, 
Paraview, jmol  ...
For instance GLE and Asymptote provide nice ps output which could be 
automatically inserted into a frontend (IPy, TeXmacs). In TeXmacs it's even 
possible to receive 'ps' out of Fricas directly with the \x2ps:..\x5 
sequence. Therefore: is any of the current plotting routines able to give 
Postscript output to stdout? 
c) What is the state of the Plot() domain? The 'coerce' gives some output 
(e.g. =plot((x:DF +-> x^2),1.0::DF..2.0::DF)@Plot), however, what was the 
purpose of this? Terminal graphics?

I found some promising links in the thread: Re:[Axiom-mail] gnuplot on 
axiom-wiki , but the links seem to be dead. I read there that Bill Page had 
something in the direction of Gnuplot script output. This could be a 
starting point and I would be rather interested to use it in texmacs. The 
following two functions allow to insert graphics into tm while using the 
plugin, so a ready-to-use 'myplot' command could easily be patched up (not 
only for gnuplot).

tmcmd(cmd:String):Void == print (concat [char 2,"command:",cmd,char 5]);

tm_inline_image(url:String):Void == 
   options:=" _"_" _"_" _"_" _"_" ))"
   q:="_""
   tmcmd(concat ["(make-inline-image (list ", q, url, q, options])
   

Kurt

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