Re: [Gnuplot-py-users] Catch Gnuplot errors

[Michael H. <mh...@al...>]

Milan SKOCIC wrote:
> I'm student and I use often Gnuplot to plot data and different
> functions. That's why I decided to write a front-end with Python &
> PyGTK.
> 
> The gnuplot.py module is very useful but reading the
> documentation, I didn't find how to catch errors given by gnuplot (for
> example: "undefined variable t"). 
> 
> Does someone know how to do that?

Currently, Gnuplot.py does not even read the output of gnuplot, let
alone try to understand errors that it writes to its output.  Presumably
one would have to open a two-way connection to gnuplot then listen for
such messages on the gnuplot process's stdout and/or stderr, and it
would probably require a little bit of intelligence to distinguish error
messages from simple informational messages.

If this were implemented it would open the way to doing a couple of
other useful things, like reading the output from gnuplot "fit" commands.

FWIW, I think PyGTK is a better choice than tkinter, as it is more
modern, has more features, and looks much better.  Most people probably
install using a package manager, in which case installing PyGTK should
be an insignificant amount of work.

Michael