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added a wiki entry for this, it can be found here:
http://www.scipy.org/wikis/topical_software/UsingMatPlotLibInACGIScript
On 11/5/05, frank h. <fra...@gm...> wrote:
> Hej Andrew,
> intersting solution! just a couple of days ago I was struggeling with
> the same problem
> I solved it by setting the environment variable from within my CGI script
> the following is a template for a cgi that uses matplotlib to create a
> png figure:
>
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
> #!/usr/bin/python
> import cgitb; cgitb.enable()
>
> # set HOME environment variable to a directory the httpd server can write=
 to
> import os
> myenv =3D os.environ
> myenv['HOME'] =3D '/tmp/'
>
> # chose a non-GUI backend
> import matplotlib
> matplotlib.use('Agg')
>
> # construct your plot
> from pylab import *
> ...
>
> # save the plot as image
> savefig(...)
>
> On 11/5/05, Andrew P <gr...@gm...> wrote:
> > OK, scratch that. Typing it out helped me see where my assumptions
> > were screwy. You can set environment variables quite happily in
> > .htaccess.
> >
> > If this gets past moderation, you can just do this:
> >
> > SetEnv HOME /user/home/directory
> >
> > In .htaccess and it fixes it right up :)
> >
> > On 11/4/05, Andrew P <gr...@gm...> wrote:
> > > Hello all,
> > >
> > > Matplotlib raises this error when I import it as a CGI program:
> > >
> > > RuntimeError: '/var/www' is not a writable dir; you must set
> > > environment variable HOME to be a writable dir
> > >
> > > I am a non-root user, and the Apache user's HOME =3D/var/www, so CGI
> > > script raises an exception when that directory isn't writeable. Ther=
e
> > > is nothing to be done about the Apache users's environment variables,
> > > or the writablity of that directory, as a non-root user :)
> > >
> > > It appears that matplotlib checks the HOME environment variable, then
> > > the MATPLOTLIBDATA variable, and then goes on to check the
> > > matplotlibrc starting with the current directory. But it raises an
> > > exception if the home directory isn't writeable without checking the
> > > rc file to see if the datapath inside it would work?
> > >
> > > Is there a way to either prevent matplotilb from checking for HOME,
> > > and go straight to the local matplotlibrc, or alternately have it
> > > check the matplotlibrc if the HOME directory isn't writable?
> > >
> > >
> > > Thanks,
> > >
> > > Andrew
> > >
> >
> >
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