Python Matplotlib Axis Label Subscript Based On Loop Counter

I'm using python and matplotlib to generate graphical output. I am creating multiple plots within a loop and would like the loop counter to serve as an index on the y-axis label.

Solution 1:

Matplotlib ships its own mathematical expression engine, called mathtext. From the documentation:

Note that you do not need to have TeX installed, since matplotlib ships its own TeX expression parser, layout engine and fonts.

So maybe try to use the following:

for i inrange(1,3):
    plt.ylabel(
           r"$\alpha_{:d} [\degree]$".format(i),
           rotation='horizontal',
           position=(0.0,0.9))

You can also use Unicode in mathtext:

If a particular symbol does not have a name (as is true of many of the more obscure symbols in the STIX fonts), Unicode characters can also be used:

 ur'$\u23ce$'