title: how to set unequal x axis intervals in Matplotlib
body: <p>Now I just simply use <code>plt.plot(x,y1,'b.-')</code> to plot a figure, but it turns out so many data are displayed between 0 to 10 on the x axis, so I want to set x axis like this <code>0,1,5,10,100,1000,100000</code></p>
  
  <p>thus, the massive data between 0 to 10 can be more spread out.</p>
  
  <p>How can I do it in Python, I am using Matplotlib</p>