heat plot; off chance that it might suit the gallery?

[Rahul N. <rp...@gm...>]

Using an hack on the excellent plot with images feature in the
gnuplot-devel version  I created this heat map in gnuplot.

http://dl.getdropbox.com/u/118481/gnuplot/heat_plot_SAT_scores.pdf

I haven't seen a similar plot in the gallery although I have seen this
motif used pretty often these days all over the web and in scientific
literature. Not sure if my creation meets "gallary standards" but if
you guys think that it does then I'd be glad to have it posted.

I had to play around a bit till I figured it out and maybe it helps
someone else save some effort then it would be worthwhile!

Cheers!

-- 
Rahul