On Tuesday 24 July 2007 9:50:46 am Peter Würtz wrote:
> Hi,
>
> I ran into some troubles when trying to do the following with
> matplotlib:
> - plotting a figure
> - using latex for axis labels
> - (getting acceptable fonts)
> - getting a pdf in the end
> I've not been able to solve this.
>
> In the documentation I found 2 ways to do this. First, when a string is
> enclosed in $ signs, matplotlib has its own way of rendering latex code.
> Thats ok for mathematical expressions, but I can't print normal text at
> all. The documentation says that \rm{} should be used, but
>
> "$\rm{some label text} (\mu V)$" becomes "somelabeltext\muV"
I think you need to use raw strings so your \'s are interpretted as \'s and
not as special characters (like \n is newline). We know it is inconvenient
that you cant do something like r'This example: $a=e^{i\pi}$' with the
existing mathtext, but it is a difficult problem and remains unsolved.
> so I searched again and found another documentation, telling me to
> enable 'text.usetex' so all text is handled by latex. This way, the text
> is rendered correctly, but then the font used for the tick numbers
> switches to some ugly looking font.
For starters, see http://www.scipy.org/Cookbook/Matplotlib/UsingTex. I suggest
changing your serif rc settings to use the PSNFSS fonts described in that
link. Also, try deleting your ~/.matplotlib/tex.cache.
> Because Latex mode does not seem to work with the pdf output,
It doesn't, not yet.
> I saved
> these figures as EPS, using epstopdf in oder to get a pdf. Normally this
> process gives me perfect results, but the ugly-font-ticks problem is
> getting even worse, because in the pdf some of them are just missing.
Try getting your system set up to use the xpdf distiller, that has always
given me excellent results.
> I upped the eps and pdf files here:
> http://www.staff.uni-mainz.de/wuertz/matplotlib/
> There is also a png file with a screenshot from the "ugly" and missing
> ticks.
>
> Plotting a reasonable figure seems to be hard, is there any chance of
> solving this problem?
There have been many problems reported on this mailing list that concern latex
markup. Most often, people have difficulty getting usetex to work because
matplotlib depends on latex, dvipng, ghostscript, and optionally xpdf (more
precisely, xpdf's pdftops utility). If those dependencies are not working
properly, or if you are missing latex packages or fonts, then it shows up in
mpl's output.
Darren
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