Hello,

I've been using Matplotlib to generate postscript (eps) graphics which I

import into my latex documents. I tried using Latex to typeset mathematical

symbols on my plots using the steps described here:

http://www.scipy.org/Cookbook/Matplotlib/UsingTex

The problem (I think) is that the eps files are genrated using dvipng, which

results in ugly figures in the final PDF output. Is there a way to get

Matplotlib to *not* use dvipng as the backend?

For example. If I use the following simple script to generate a eps file

## ···

# =========================================

from matplotlib import rc

import pylab

from pylab import *

import numarray as na

params = {

'backend': 'ps',

'axes.titlesize': 24,

'axes.labelsize': 18,

'xtick.labelsize': 14,

'ytick.labelsize': 14,

'legend.fontsize': 14

}

pylab.rcParams.update(params)

#rc('text', usetex=True)

N = 4

ind = arange(N) # the x locations for the groups

width = 0.35 # the width of the bars

data01 = (5, 10, 3, 2)

data02 = (3, 7, 10, 6)

title('Normal EPS Generation')

p1 = bar(ind, data01, width, color='#CCCCFF')

p2 = bar(ind+width, data02, width, color='#3399FF')

xticks(ind+width, ('1', '2', '3', '4') )

xlim(-width,len(ind))

legend( (p1[0], p2[0]), ('data01', 'data02'), loc='upper right', shadow=False)

pylab.savefig('test.eps')

I get a nice EPS file which looks good in my final PDF. Also, running ps2pdf

and pdffonts shows that all the fonts are properly embedded in the eps file:

# ======================

$ ps2pdf test.eps

$ pdffonts test.pdf

name type emb sub uni object ID

------------------------------------ ------------ --- --- --- ---------

NBOBDW+BitstreamVeraSans-Roman TrueType yes yes no 8 0

So as one would expect, the plots look good in the final PDF when zooming in

and out because all the fonts are there. On the other hand, if I uncomment

the "rc('text', usetex=True)" line in the script so that Latex is used for

the fonts, I get the following when converting the resulting EPS file to PDF:

=======================

$ ps2pdf test.eps

$ pdffonts test.pdf

name type emb sub uni object ID

------------------------------------ ------------ --- --- --- ---------

=======================

As you can see, there's no font embedding in this case and the image looks bad

when previewed in either Ghotsview (eps) or in PDF. Does anyone know if it's

possible to get Matplotlib + Latex font embedding to work?

Regards,

Stephan