Hi all,

While playing around with the TeX support in matplotlib (rc('text',

usetex=True)) and the PDF backend I noticed an interesting phenomena whereby

the summation symbol in my plot was rendered at a larger size than regular TeX

would produce.

Taking the following example as my basis

http://matplotlib.sourceforge.net/examples/pylab_examples/tex_demo.html I

created a PDF and compared it, in Evince to a PDF with an equivalent math

section created by LaTeX.

Overlaying the two PDFs results in the following:

http://freddie.witherden.org/drop/matplotlibtex.png The bottom is the output

from matplotlib while the top LaTeX. For some reason the summation symbol is

larger in matplotlib than in LaTeX.

I have seemingly confirmed this with latex + dvipdfm and pdflatex.

Does anyone know what might be causing this? The document font sizes are the

same and I tried to match the LaTeX file as closely as possible to the one used

internally by matplotlib.

Polemically yours, Freddie.