[Mapserver-users] wms and projections

Amit S BEHERE abehere at cs.ucsd.edu
Fri Feb 6 11:37:43 PST 2004


Hi all,
This is an extension of the question I had posted previously regarding
seeing only one point on the map. I had taken example1-1.map from the
tutorial and modified it to display my shapefile. However I was seeing
only one tree when I should have been seeing a whole bunch. Thanks to
David I was able to fix that (I needed to set MINSCALE, athough I don't
know why yet?) and could see the whole set of trees.

Now I have converted that mapfile to serve as a WMS service by adding the
appropriate wms tags in the mapfile. I am getting the capabilites back
correctly. However when I use the OGIS GetMap request I again see just one
tree.

http://pune/mapserver/mapserv.exe?map=/MSTutorial/testwms.map&request=getmap&version=1.1

However if I view the same file i.e testwms.map using the regular
mapserver interface i.e using the command
http://pune/mapserver/mapserv.exe?map=/MSTutorial/testwms.map&mode=map

I see the whole set again. So basically I see just one tree if I give the
OGIS getmap url and a whole set of trees when I give the regular
mapserver url. Any one encountered similar problems or any idea why this
is happening

Here is my map file

MAP
  NAME 	     demoservice
  IMAGETYPE      PNG
  EXTENT         385538 3761010 391329 3764477
  UNITS	     METERS
  SIZE           600 600
  SHAPEPATH      "data"
  IMAGECOLOR     255 255 255

PROJECTION
  "init=epsg:26911"
END


WEB
   IMAGEPATH "c:\itasca\tmp\"
   IMAGEURL "/tmp/"
   MINSCALE 50000         #with this enabled, produces image with all
points
   #MAXSCALE 15500000       #see 'with_scale_restrictions.png'

   METADATA
	"wms_title"			"WMS Demo Server"
	"wms_onlineresource"
"http://pune/mapserver/mapserv.exe?map=/MSTutorial/testwms.map&"
	"wms_srs"			"epsg:26911"
   END
END

SYMBOL
 NAME 'circle'
 TYPE ELLIPSE
 POINTS 1 1 END
 FILLED TRUE
END


LAYER
   NAME  trees
   DATA  vernon_trees
   STATUS  DEFAULT
   TYPE POINT
   LABELITEM "TREEID"
   CLASS
     COLOR        0 0 0
      SYMBOL 'circle'
      SIZE  6
   END

PROJECTION
  "init=epsg:26911"
END

   METADATA
	"wms_title"			"WMS Demo Server"
	"wms_srs"			"epsg:26911"
	"wms_extent"		"385538 3761010 391329 3764477"ho

   END

 END #  layer ends here

END # end of map file/object

Amit Behere.
UCSD.
"Technology doesn't make your life more difficult or easy, it just changes
the rules"......Vishwanathan Anand




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