I also did a quick test of a raster query, with MapServer CGI, with the
raster classed or not classed, and i get this error:
mapserv(): Web application error. No way to generate a valid map extent
from selected shapes.
which was reported earlier:
http://www.nabble.com/Raster-query-gives-error-tf2008561.html#a5517894
Please file the bug as requested by Frank.
jeff
Marco Cerruti wrote:
Hi all,
I'm a new user of Mapserver. I'm working with MS4W (version 2.2.3) via
CGI and I'm having troubles with queries on classified rasters. Queries
on non-classified rasters work fine, while in cases of classified ones
(already tried several formats: img, bil, tif, png) I get the following
error:
msDrawShape(): General error message. Unknown layer type.
If I comment CLASS definitions the same query shows me correct results
(one or more pixels queried, according to the set tolerance, but of
course no information on [class] value).
I post an extract of my mapfile, with the definition of the raster layer
and one of its classes. Maybe I'm doing something wrong with class
template (and layer header/footer ...).
Hoping to receive a little help ... and sorry for my English!
Marco (Italy)
--- --- --- --- ---
LAYER # Classificazione vegetazione 2000
NAME class_2000
DATA "2000/final_after_merging.bil"
STATUS OFF
TYPE RASTER
OFFSITE 0 0 0
GROUP "Uso e copertura del suolo"
TOLERANCE 0
TOLERANCEUNITS pixels
PROJECTION
"init=epsg:4326"
END
METADATA
TITOLO "Classificazione vegetazione da satellite - Anno 2000"
ORDINE "0044"
END
HEADER "class2000_header.html"
FOOTER "class2000_footer.html"
CLASSITEM "[pixel]"
CLASS
NAME "Latifoglie (pure o dominanti)"
EXPRESSION ([pixel] = 2)
STYLE
COLOR 0 255 0
END
TEMPLATE "class_query.html"
END
END # Fine raster classificazione vegetazione 2000
--
Jeff McKenna
DM Solutions Group Inc.
http://www.dmsolutions.ca
