On Tue, May 5, 2009 at 11:47 AM, Jose Gomez-Dans <jgomezd...@gmail.com>wrote:
> Hi,
> I would like to plot a density slice scatter plot (when you have lots of
> points superimposed, it's very useful). An example from IDL/envi is here: <
> http://www2.geog.ucl.ac.uk/%7Eplewis/geog2021/practical1/scatter3.gif>
>
> My rustic approach to solving this problem has been to bin all my data
> points into a 2D array (each point that falls in a given cell adds one to
> that cell), and then use the c argument in scatterplot to map the color to
> the number of samples in the corresponding bin. Is there a better way of
> achieving this, as I need a fair bit of tweaking to get the color scales
> right?
You might try looking at pyplot.hexbin:
http://matplotlib.sourceforge.net/examples/pylab_examples/hexbin_demo.html
Ryan
--
Ryan May
Graduate Research Assistant
School of Meteorology
University of Oklahoma
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