Re: [Gnuplot-py-users] Using binary file with python-gnuplot

[Sean M. <sma...@gm...>]

The problem is still there if I put in a long call (5 - 10 seconds) to
time.sleep after the plot. I am running this within a python interpreter,
so the python thread gets to run as long as it needs.

Just to mess around a bit more, I also tried it by putting it within a file
then running it from the shell, with something like

$ python2 analysis.py

And I'm still getting the same factorize error.



On Mon, Sep 8, 2014 at 7:47 AM, Michael Haggerty <mh...@al...>
wrote:

> On 09/08/2014 02:38 AM, Sean Mattingly wrote:
> > I would just like to report my experience / trouble so that others may
> > find solace if they have a similar problem.
> >
> > I have code which makes a basic 2 dimensional Gaussian function. I want
> > to make a basic surface plot of this function, just to see what it looks
> > like. I have found that using Gnuplot.GridData function with the
> > optional filename argument enabled, so that it creates a permanent file,
> > works. If I leave out the "filename=test.bin" option, the program
> > defaults to the temporary FIFO class, and Gnuplot (4.6) is unable to
> > read and properly facorize the matrix.
>
> Problems like this could occur if the FIFO gets deleted too soon or the
> Python thread that is supposed to write into the FIFO is killed too
> soon. Does the problem go away if you put a long call to time.sleep
> after the plot command?
>
> It is also possible that newer versions of Gnuplot want to read through
> the file twice. This would be incompatible with the FIFO code, which is
> only prepared to write the content into the FIFO a single time.
>
> Michael
>
> --
> Michael Haggerty
> mh...@al...
>
>