title: Plotting 3D surface in python
body: <p>Although there are several sources on how to plot 3D surfaces with XYZ format. I have a CSV file from a scanning laser that provides no coordinate information on X and Y, just Z coordinates of a rectangular grid.</p>
  
  <p>The file is 800 x 1600 with just z coordinates. Excel can plot it very easily with surface plot, but is limited by size.</p>
  
  <p>How can I approach this problem?</p>
  
  <p><a href="http://i.stack.imgur.com/zSemc.png" rel="nofollow">Screenshot of data format</a></p>