[mapserver-users] RASTER CLASSES AND QUERY ERROR

[simone.frigerio]

Dear all,
I had some problem to visualize a GRID ESRI, but it was 
solved passing through a geodatabase, importing the GRID 
and extracting like other type of raster (img raster in my 
case).
The layer was correctly visualized in the map.
But at this level I want to check two points:

- if I have a DEM for example (resolution 1 meter) and I 
want to visualize it with this same resolution, how I can 
define the class and the the style? The range of height 
goes from 900 m to 1324 m, but I can not create a class 
for every meter! Is there a way to represent in continous 
this range in the map?

- for the query on this layer, I proceed in this way: I 
have an .img image raster  and an associated table with a 
field "VALUE" with height value, "COUNT" with number of 
pixel and "OGC_FID", created for the metadata necessary 
for query.
This is a part of the table:

VALUE COUNT OGC_FID
900   4073    0
901   13132   1
902   7475    2
...   ....  ...

And this is a part of the mapfile referred to query on 
raster:
LAYER
     NAME "DEM"
     TYPE raster
     DATA "rrdd33_id"
     TEMPLATE "ttt"
     METADATA
       "id_attribute_string" "OGC_FID|string"
       "query_returned_attributes" "VALUE"
     END
...

thanks
Simone