wms server with custom epsg

Travis Kirstine tkirstine at JDBARNES.COM
Thu Jan 25 16:52:30 EST 2007


Hi all,
I have a few question regarding custom epsg codes and wms server / clients
I set up a wms server that serves up ortho imagery in a few standard spatial
reference systems EPSG:26917 and EPSG:4326 but our client would like it also
served as a Lambert Conformal Conic projection that has no EPSG code as far
as I can tell.  I've created a custom epsg code in the epsg file:

## NAD83 LCC Custom
<42305> +proj=lcc +ellps=GRS80 +lat_0=0 +lon_0=-84 +lat_1=44.5 +lat_2=54.5
+x_0=1000000.0 +y_0=0 +datum=NAD83 +units=m no_defs <>

and added it to the "WMS_SRS" in the metadata:
   WEB
      MINSCALE 100
      MAXSCALE 10000000
      IMAGEPATH "/var/www/html/public/map_images/"
      IMAGEURL "map_images/"
      METADATA
         "WMS_TITLE" "First Base Solutions - Web Map Service"
         "WMS_ABSTRACT" "WMS"
         "WMS_ACCESSCONSTRAINTS" "none"
         "WMS_ONLINERESOURCE" "http://xxxxxxx"
         "WMS_SRS" "EPSG:26917 EPSG:4269 EPSG:4326 EPSG:42305"
      END
   END

I was hoping that the client side would be able to interprete the new srs
automatically by when testing with ArcGIS that dosen't seem the case.  Am I
right to assume that if the client dosen't have the srs defined the
application won't accept the wms srs as valid.


Travis Kirstine
First Base Solutions Limited
Markham, ON
Canada



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