On 7/13/07, David Roe <[EMAIL PROTECTED]> wrote:
> Hey all,
> I ran into a problem saving a graph to postscript recently. Here's what I
> did:
>
> plot.options['plot_division'] = 40000
> plot.options['plot_points'] = 20000
> P=plot(sin(5/(x)), x,0,1)
> P.save('filename.eps', xmin = -.25, xmax = 1)
>
> Attempting to open the resulting file on my MacBook Pro with either Preview
> or ps2pdf leads to errors (I've pasted in the error from ps2pdf at the end
> of this e-mail in case it's useful to anyone).
> Similar problems arise with .ps, but .png appears to work fine.
I think the Apple tools for converting from ps to pdf just don't
work with the eps files output by matplotlib (probably it's a font problem).
Also, I tried generating the eps file on OS X, then copying it to Linux,
and it still doesn't convert to pdf there. Generating the file directly
on Linux works fine (and the file is much smaller); also the resulting
eps file (created on Linux) when copied back to OS X works fine
with Preview. So matplotlib is doing something stupid in generating
eps's when run on a mac.
WORKAROUND: If you instead do
sage: P.save('filename.pdf', xmin = -.25, xmax = 1)
the resulting pdf works just fine with preview on the mac; also,
the file is much smaller. Note that matplotlib's pdf output usually
works, but sometimes doesn't -- i.e., it is somewhat experimental.
It might work fine for whatever you're doing.
William
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