/Python/Matplotlib force scientific notation and define exponent

Matplotlib force scientific notation and define exponent

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

class OOMFormatter(matplotlib.ticker.ScalarFormatter):
    def __init__(self, order=0, fformat="%1.1f", offset=True, mathText=True):
        self.oom = order
        self.fformat = fformat
        matplotlib.ticker.ScalarFormatter.__init__(self,useOffset=offset,useMathText=mathText)
    def _set_order_of_magnitude(self):
        self.orderOfMagnitude = self.oom
    def _set_format(self, vmin=None, vmax=None):
        self.format = self.fformat
        if self._useMathText:
            self.format = r'$\mathdefault{%s}$' % self.format


x = np.linspace(1,9,9)
y1 = x*10**(-4)
y2 = x*10**(-3)

fig, ax = plt.subplots(2,1,sharex=True)

ax[0].plot(x,y1)
ax[1].plot(x,y2)

for axe in ax:
    axe.yaxis.set_major_formatter(OOMFormatter(-4, "%1.1f"))
    axe.ticklabel_format(axis='y', style='sci', scilimits=(-4,-4))

plt.show()

Source: stackoverflow.com

Similar codes

0 vote114 views1 answer
Python close a socket
Python
13 votes115 views5 answers
How to find largest number in list python without max
Python
0 vote115 views1 answer
Django change foreign key
Python
40 votes116 views6 answers
Pandas reset index
Python
1 vote83 views1 answer
Python take input from terminal
Python
1 vote126 views1 answer
Discord.py on command error
Python
0 vote117 views1 answer
Dataframe python unique values rows
Python
-1 vote140 views2 answers
Difference between / and // in python
Python
15 votes146 views2 answers
Post request in python flaks
Python
9 votes129 views2 answers
What does isalpha do in python
Python