Which version of matplotlib and ghostscript are you using? With
matplotlib SVN trunk and gs 7.07, I can't reproduce this here, either
with your provided ps file or generating it myself.
Paul Novak wrote:
> Hello,
>
> I am having some problems with the PS backend. I used the following
> script to create a PostScript file
>
> #!/usr/bin/env python
> import matplotlib
> matplotlib.use('PS')
> import matplotlib.pyplot as plt
> import numpy
>
> x1 = numpy.arange(0,5)
> y1 = x1
> plt.plot(x1, y1)
> plt.savefig('ps_backend.ps')
> plt.show()
>
>
> When I tried to open the PostScript file in GSview, there is the
> following warning, and the file does not render properly. I have
> attached the PostScript file and a screenshot of the incorrect rendering.
>
> DSC Error
> At line 233:
> %%Page: 1 1
> This %%Page: line occurred in the trailer, which is not legal.
> EPS files should be encapsulated in %%BeginDocument / %%EndDocument.
> If is possible that an EPS file was incorrectly encapsulated,
> and that we have been confused by the %%Trailer in an EPS file.
Something is leading Ghostscript to believe this is an encapsulated
postscript file when it isn't. That's odd. Did you change the
extension of the file or something?
>
>
> The error can be eliminated by removing the line with %%EOF at line
> 230, but I don't know anything about PostScript or if that change
> would have any other effects. I only found this solution after
> comparing with the output from the Cairo backend. The same change to
> PostScript output can be achieved with the following diff (from svn
> diff), but again, I don't know if it is appropriate.
>
> Index: ttconv/pprdrv_tt.cpp
> ===================================================================
> --- ttconv/pprdrv_tt.cpp (revision 6810)
> +++ ttconv/pprdrv_tt.cpp (working copy)
> @@ -1070,7 +1070,6 @@
> } /* end of if Type 42 not understood. */
>
> stream.putline("FontName currentdict end definefont pop");
> - stream.putline("%%EOF");
> } /* end of ttfont_trailer() */
>
> /*------------------------------------------------------------------
I'm surprised that this works, as the %%EOF comments are generally just
considered informational. But it doesn't hurt to remove this line (and
save 6 bytes per file!) so I'm fine with removing this line if we can
confirm this is the source of the error.
Mike
>
>
> Paul Novak
>
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--
Michael Droettboom
Science Software Branch
Operations and Engineering Division
Space Telescope Science Institute
Operated by AURA for NASA
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