gnuplot-py-users

[Gnuplot-py-users] Multiple Datasets Gnuplot

[Sears M. <sea...@gm...>]

I am trying plot many datasets (1500) in a single plot and am running into an I/O error due to too many open files.

The code is as follows:

for row in dataSet:
plots.append(Gnuplot.PlotItems.Data(eval(row[2])))
g.plot(*plots)
g.hardcopy(filename='output.ps')

Has anyone found a workaround for this issue?

Thanks in advance 

Re: [Gnuplot-py-users] Multiple Datasets Gnuplot

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

On 08/23/2011 04:33 AM, Sears Merritt wrote:
> I am trying plot many datasets (1500) in a single plot and am running
> into an I/O error due to too many open files.
> 
> The code is as follows:
> 
> for row in dataSet:
> plots.append(Gnuplot.PlotItems.Data(eval(row[2])))
> g.plot(*plots)
> g.hardcopy(filename='output.ps')
> 
> Has anyone found a workaround for this issue?

You might want to put multiple datasets in a single file (e.g.,
separated by blank lines).  This means that they will all be plotted in
the same style, but with 1500 datasets I doubt that the datasets are
very distinct anyway.

If you insist on having so many distinct datasets, they you have to
increase the number of file descriptors allowed to your process.  See,
for example, [1] or [2].

Michael

[1]
http://stackoverflow.com/questions/880557/linux-socket-accept-too-many-open-files
[2]
http://www.cyberciti.biz/faq/linux-increase-the-maximum-number-of-open-files/

-- 
Michael Haggerty
mh...@al...
http://softwareswirl.blogspot.com/