pylab without X11

marc gtitus_ at
Tue Sep 30 22:53:48 CEST 2008

This may help you ... or not

You may have to change your backend :

p13 of the matplotlib user guide: backends
p17 how to change the backend in the matplotlibrc

An example of matplotlibrc ( backend choice is at the beginning ):

You may choose PS or SVG or pdf, there might be other possibilities, I 
do not know
To save the file : savefig


Willem-Jan Vriend a écrit :
> I want to use pylab (matplotlib) on a machine without X11. I'm trying to 
> generate onthefly graphics for an apache2 web service, so they do not 
> have to be displayed on this machine !
> When i do
>    pylab.figure()
> I get the error
>    TclError: couldn't connect to display ":0.0"
> I tried setting the DISPLAY environment variable to "", ":0.0" but I got 
> the same error message.
> Any help is very much appreciated.

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