title: What does this Imagedraw code line for pixel color setting mean?
body: <p>I am trying to color a pixel of an image (Pillow ImageDraw) according to an integer  property,say m, of that pixel at ix,iy coordinates. I came across this line of code in one plotting example and this gives beautiful results.</p>
  <pre><code>    bitmap = Image.new(&quot;RGB&quot;, (WIDTH,HEIGHT), &quot;white&quot;)
      pix=bitmap.load()
  </code></pre>
  <p>....obtain m value for the pixel ix,iy</p>
  <pre><code>    pix[ix,iy] = (m&gt;&gt;21)+(m&lt;&lt;10)+m*8
  </code></pre>
  <p>I have searched documentation to see what this means, but couldn't find any. I think the inequality sign has something to do with shifting bits. Can someone expalin? Thanks</p>