Re: PLplot and Octave

[Quentin Spencer]

Jordi Gutierrez Hermoso wrote:
> Perhaps I should be asking PLPlot folks instead of this list, but...
>
> Eager to try out alternatives, I apt-got (Debian testing/unstable)
> everything related to plplot and Octave just to see how it compares
> with the standard (slightly non-free) gnuplot interface.
>
> Seems to work fine, except that when I closed the test plplot window
> that Octave opened, plplot complained about explicit kill or x-server
> shutdown, segfaulted, and Octave core-dumped:
>
>   octave:1> toggle_plplot_use
>   Use PLplot: on
>   octave:2> x = -pi:0.1:pi;
>   octave:3> plot(x,sin(x))
>
>   #Closed the plplot window here, which displayed with no problems.
>
>   octave:4> plot(x,sin(x))
>
>   #Tried plotting the same thing again, but...
>
>   X connection to :0.0 broken (explicit kill or server shutdown).
>   warning: broken pipe -- some output may be lost
>   panic: Segmentation fault -- stopping myself...
>   attempting to save variables to `octave-core'...
>   save to `octave-core' complete
>   Segmentation fault
>
> Also, looks like the X11 driver for plplot doesn't redraw the window.
> I suppose this is a problem with precisely this driver.
>
> Can anyone suggest a fix?
>   
I can't suggest a fix, but I can confirm this is a problem. I tried it 
when plplot showed up in Fedora Extras a few months ago and also 
remember getting a core dump. It's probably lazy of me, but since I 
wasn't sufficiently impressed by the plot quality, I gave up and never 
bothered to file a bug report.

-Quentin