[mapserver-users] Use of a Colortable

Heiko Schröter schroete at iup.physik.uni-bremen.de
Wed Apr 15 07:52:22 EDT 2009


Hello,,

we are mapping global satellite data with postgis.

Is it possible with mapserver to change the color of the symbol according to 
the value read in from postgis ?
Now the color is fixed within the mapfile reading only the geolocations i.e.

LAYER
  CONNECTION "user=bla password=blub dbname=foo host=fum"
  DATA "geocenter from table1"
      CLASS
          COLOR 50 150 150
          SYMBOL "circle"
          SIZE 5
      END
END

My (maybe/probably ill) idea is something like:
...
DATA "value and geocenter from table1"
...
COLOR on value using "/dir/my_colortable.dat"
SYMBOL "circle"
...

But it looks like that only one coloumn of the GIS Table could be read for a 
given LAYER.DATA  statement.

Thanks for any suggestion.

Regards
Heiko


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