Hi,

I am a new user of matplotlib so maybe my question is elementary, but 
have not been able to find an answer to my problem in the archive.

I would like to make a 2D plot of colored points of 3D data (clusters). 
My data looks like this:

11837.2120    -0.0858    2.0000
23975.2120    -0.0672    2.0000
37609.2120    -0.0306    2.0000
53263.9800    -0.0690    2.0000
72106.6760    0.2708     1.0000
92674.6760    -0.0129    3.0000
116758.676    -0.1245    3.0000
...

So I need to plot the first and second column as points on the x-y axis 
and color the points according to the numbers in the third column (which 
are integers ranging from 1 to5).

I'd appreciate any help. I realize something so typical should be 
somewhere in the documentation but I was not able to find it.

Thanks,
Paul

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