Hi - I'm having an unusual problem with some maps I produced with Mapnik.
With some choropleth maps I'm getting incorrect output.  This can best be
seen by comparing maps I've produced using Mapnik:
http://www.piedmontgeographic.com/wakesearch.html and Mapserver:
http://www.piedmontgeographic.com/example1.html

If you look at the center of the map, you will see a tract (tractid 051600)
that has a different color value between the Mapnik and Mapserver produced
images.  If you activate the searcher and select this tract you will see
that the avg_r_tax_val_0906 is 670473.65, wich means the Mapserver image is
correct.  How is the happening? I've examined the mapfile many times, and it
is correct.  Most of the tracts are correct. Only a few come out incorrect!

Jim
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