thematic mapping from external db

[Ben Thompson]

Hello mappers,
We're trying to color shapes on the map according to values from an extenal
database.
I tried adding 5 classes to the mapfile layer, each with a different color
(and no expression)
then setting $oShape->classindex to this or that value in the widget
parseUrl function.
This has no effect. Anyone know why? Am I wrongly assuming that shapindex is
supposed to dictate which class the shape belongs to? Ideas for another way?

Thanks,
Ben Thompson
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