title: Python real time varying heat map plotting
body: <p>I have a 2D grid 50*50. For each location I have an intensity value(i.e data is like <code>(x,y,intensity)</code> for each of those 50*50 locations). I would like to visualize the data as a heatmap.</p>
  
  <p>The twist is that every second the intensity will change(for most of the locations), which means I will need to re-draw the heatmap every second. I am wondering what is the best library/approach to handle this kind of real-time varing heatmap.</p>