how to adjust x axis in matplotlib

Question

I have a graph like this

The data on the x axis means hours, so I want the x axis to set as 0, 24, 48, 72.....instead of the value now, which is difficult to see the data between [0,100]

fig1 = plt.figure()  
ax = fig1.add_subplot(111)
ax.set_yscale('log')
ax.plot(x,y,'b-')

According to the the first answer, I got this:

Answer 1

Look at the docs :

xlocs, xlabs = plt.xticks()

put in xlocs your range, and in xlabs what you want to display.

then:

 plt.xticks(xlocs, xlabs)

Answer 2

It sounds like you want to changes the limits of the plotting display - for that use xlim (and ylim for the other axis). To change the xticks themselves is provided in the answer by @fp. Show below is an example using without/with xlim:

# Sample data
import numpy as np
N = 2000
X = np.random.gamma(.5,size=N)*100

import pylab as plt

plt.subplot(2,1,1)
plt.hist(X,bins=300)

plt.subplot(2,1,2)
plt.hist(X,bins=300)
plt.xlim(0,100)

plt.show()