Bivariate legend

[Michael Schulz - GIS Bearbeiter]

Hi MapServers!

I was wondering if anyone has tried to implement in a mapserver
application a layer with a bivariate classification, i.e. a
classification where a class is defined by a combination of two
attribute items? 
One way would be obviously to create a new field in the dbf attribute
table, that combines the two items in one unique value. 
Are there other ways?

TIA, Michael

--------------------------------------------------------
Michael Schulz
in medias res GmbH

www.webgis.de