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The issue is quite simple, I have a bunch of figures being generated with tikz (which in turn calls gnuplot). In order to bypass the memory issue I externalised tikz, which was fine until I tried plotting a larger contour (around 100k points). I now get the "! TeX capacity exceeded, sorry [main memory size=10000000]." error even if I increase the main memory by editing texmf.cnf

I can plot the figure in question with gnuplot independently but would rather have it done within the latex file for easier editing.

Any suggestions?

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    This is more like a workaround but worked for me, when I had a pretty similar problem with tikzexternalize. Try putting the tikz pictures in standalone documents and include the resulting pdf afterwards. – Rico Feb 28 '16 at 17:41
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    A path with 100k points is an heresy. – Paul Gaborit Feb 28 '16 at 23:39
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    100k is probably too much but have you tried to compile with luatex? Also consider to decimate the points, do you really need to plot 100k? – mirkom Feb 29 '16 at 1:47
  • @Rico thanks I'll try doing that, might end up being the best option – Felipe Feb 29 '16 at 20:07
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    @Felipe If you reduce your data to 10k points, I'm pretty sure that no one will see the difference and your PDF file will be ten times smaller. – Paul Gaborit Feb 29 '16 at 22:58
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there appears to be no direct solution, the options are: - either use luatex (see @PaulGaborit's reply) - reduce the number of points to be plotted (see @mirkom's reply) - generate the plot as a standalone file and then include the pdf (see @Rico's reply)

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