[Geomoose-users] using WMS from Mapserver

[TC Haddad]

Hi Mark

If I understand what you want to do correctly, I think you need to point to
your WMS source differently. Basically you are needing to use Mapserver as
both a WMS server (your WMS source) and as a WMS client (via GeoMoose).

First, I assume you have a working WMS at that URL? You should test and
confirm that first before killing yourself over subsequent steps. A simple
test would be to use a browser (with going through GeoMoose) to look at your
GetCapabilities document using something like this:

http://mymapserver.org/cgi-bin/mapserv.exe?map=/location_to_mapfile/mapfile
.map&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetCapabilities&

if you are successful with that request you can confirm that you are
rendering a map via a GetMap request (obviously use the correct Layer name,
EPSG code and BBOX values) something like this:

http://mymapserver.org/cgi-bin/mapserv.exe?map=/location_to_mapfile/mapfile
.map&&SERVICE=WMS&VERSION=1.1.1&REQUEST=Get
Map&&LAYERS=prov_bound&STYLES=&SRS=EPSG:4326&BBOX=-173.537,35.8775,-11.9603,83.8009&WIDTH=400&HEIGHT=300&FORMAT=image/png

if you are successful in returning an image using a GetMap request, then you
have successfully configured Mapserver as a WMS Server. Now you can move on
to creating a map file for your WMS, which will allow you to use Mapserver
as a WMS client via GeoMoose. A WMS client map file could be something like
this:

LAYER
    NAME "prov_bound"
    TYPE RASTER
    CONNECTIONTYPE WMS
    STATUS OFF
    CONNECTION "http://mymapserver.org/cgi-bin/mapserv.exe?map=/
location_to_mapfile/mapfile.map&"
    PROJECTION
      "init=epsg:4326"
    END
    METADATA
      "wms_srs"             "EPSG:4326"
      "WMS_name"        "Provincial_Boundary"
      "wms_server_version"  "1.1.1"
      "wms_format"          "image/png"
    END
END


Then you can reference that map file as you would any other non-WMS map file
in GeoMoose (normal paths to location of .map on your server, and no need to
add & or ? and extra parameters to file name).

The custom projections for the WMS should be declared in the WMS map file as
above using EPSG codes if possible, and the projection** of you final map
can be set in GeoMoose directly, as you would for any other layer.

I haven't tested this directly, but it seems like this approach should work
given my previous tests.

docs on Mapserver as a WMS Server are here:
http://mapserver.org/ogc/wms_server.html

docs on Mapserver as a WMS client are here:
http://mapserver.org/ogc/wms_client.html

Tanya

** Note that if your WMS service includes rendered labels, and you are
allowing re-projection after rendering, you could see some weird/undesirable
effects.

On Mon, Nov 22, 2010 at 10:13 AM, Mark Volz <MarkVolz at co.lyon.mn.us> wrote:

>  Hello,
>
> I would like to add a WMS from another mapserver using the map-source tag.
>
> <map-source name="myName" type="wms" projection="myCountyProjection">
>
>         <url>http://MapserverHost.org/cgi-bin/mapserv.exe?map=/
> location_to_mapfile/mapfile.map&</url>
>
>         <layer name="myLayer"/>
>
> </map-source>
>
> 1.      GeoMoose doesn’t load at all when there is a “&” in the url of the
> wms service.  How can I add <url>http://mymapserver.org
> /cgi-bin/mapserv.exe?map=/location_to_mapfile/mapfile.map&</url>?
>
> 2.      How can we add a custom projection?  Can we add the parameters in
> the projection tag?  For example:  projection= “+proj=longlat
> +a=6377276.345 +b=6356075.41314024 +no_defs”
>
>
>
> Thanks
>
> Mark Volz
>
> GIS Specialist
>
> Lyon County, MN
>
>
>
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