Rotate axis text in python matplotlib

python matplotlib
tMC picture tMC · Jun 12, 2012 · Viewed 487k times · Source

I can't figure out how to rotate the text on the X Axis. Its a time stamp, so as the number of samples increase, they get closer and closer until they overlap. I'd like to rotate the text 90 degrees so as the samples get closer together, they aren't overlapping.

Below is what I have, it works fine with the exception that I can't figure out how to rotate the X axis text.

import sys

import matplotlib
matplotlib.use('Agg')
import matplotlib.pyplot as plt
import datetime

font = {'family' : 'normal',
        'weight' : 'bold',
        'size'   : 8}

matplotlib.rc('font', **font)

values = open('stats.csv', 'r').readlines()

time = [datetime.datetime.fromtimestamp(float(i.split(',')[0].strip())) for i in values[1:]]
delay = [float(i.split(',')[1].strip()) for i in values[1:]]

plt.plot(time, delay)
plt.grid(b='on')

plt.savefig('test.png')

Answer

scottlittle picture scottlittle · Jun 8, 2016

This works for me:

plt.xticks(rotation=90)

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