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tacaswell/pi_format.py

Created January 17, 2013 02:54
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Format nicely printed labels based on pi for matplotlib x-axis
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pi_format.py
def format_frac(fr):
'''Convert a/b to latex'''
sp = str(fr).split('/')
if len(sp) == 1:
return sp[0]
else:
return r'$\frac{%s}{%s}$' % tuple(sp)
frac_size = 4
step = fractions.Fraction(1, frac_size)
ax.set_xticks([np.pi * j * step for j in range(2 * frac_size + 1)])
ax.set_xticklabels([format_frac(j * step) + '$\pi$' for j in range(2 * frac_size + 1)])
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