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

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...