title: How to save an image plotted with matplolib 1.5
body: <p>I want to save an image plotted with matplotlib. For that, I use the function savefig which has different parameters. 
  The problem is that when I saved the image, this function add additional white pixel. </p>
  
  <p>In short, I would like to save the image I draw with the original size. In other words, if the data I draw has a dimension of 1000x560, I save the image with those dimensions without additional white parts.
  Thus in this way a pixel of the saved image coincides with the pixel that the figure of matplotlib can see.</p>
  
  <p>I'm using python 2.7</p>
  
  <p>Can anyone help please?</p>
  
  <p>Thanks</p>