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.

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