title: Saving plot with high resolution image
body: <p>Since, i'm a newbie to python. I was trying to save a plot using <strong>matplotlib</strong> in python with the command <code>plt.savefig()</code>. 
  The problem is that the image being save is low in resolution. Unable to read data points.</p>
  
  <p>I was wondering if there is a way to save such figures in a very high resolution?</p>