How to put power of 10 formats not like 1e-5 at axes?

Question

If we use scientific notation for plotting data as you know usually 1e{+b} would be noted on top of axes. I would like to put 10^{b} instead of the notations of 1e{+b}. Is there any way to accomplish this?

Answer 1

Yes, you could use matplotlib.ticker.FuncFormatter, try this:

import matplotlib.pyplot as plt 
import matplotlib.ticker as mtick
import numpy as np

fig = plt.figure()
ax = fig.add_subplot(111)
xs = np.logspace(1,10,10)

ax.plot(xs,range(10))
ax.set_xscale('log')

#the next line is generally wrong, it works just as an example
#ax.xaxis.set_major_formatter(mtick.FuncFormatter(lambda value,pos: ("$10^{%d}$" % pos) ))

#this way change the ticks formats
#import math
#ax.xaxis.set_major_formatter(mtick.FuncFormatter(lambda v,_: ("$10^{%d}$" % math.log(v,10)) ))

#maybe this is what you want
ax.xaxis.set_major_formatter(mtick.ScalarFormatter(useMathText=True))

plt.show()

The above example will render as latex but if you prefer to show the '^' symbol just use "10^{%d}" % pos on your function.