[OpenLayers-Users] Re: WMS object

[Julien Cigar]

Hi,

Normally the only thing to do is to use an "SRS" parameter, something like:

var layer = new OpenLayers.Layer.WMS(
'YOUR_LAYER_NAME', "http://YOUR_WMS_SERVER', {
   layers: 'YOUR_LAYER',
   transparent: true,
   format: 'image/png',
   SRS: 'EPSG:3857',
   SLD: 'http://YOUR_SLD_ADDRESS'
  }, {
   isBaseLayer: false,
   singleTile: true,
   opacity: 0.8,
   visibility: false
  }
)

I don't know which WMS server you use, but if it's Mapserver don't 
forget to add the supported projections in the WEB METADATA section, 
something like "wms_srs" "EPSG:4326 EPSG:3857", otherwise it will not work.

For example:
     WEB
         IMAGEPATH "/tmp/"
         IMAGEURL "/tmp/"

         METADATA
             "ows_enable_request"   "*"

             #######
             # WMS #
             #######

             "wms_title" "my WMS server"
             "wms_onlineresource" 
"http://my/wms/address?map=/path/to/mapfile.map&"
             "wms_srs" "EPSG:4326 EPSG:3857"
         END
     END

Julien

On 08/08/2011 12:26, Jan Henrik Øverland wrote:
> How do I request a specific SRS when creating a wms layer?
>
>
> On Fri, Aug 5, 2011 at 14:22, Jan Henrik Øverland
> <janhenrik.overland at gmail.com <mailto:janhenrik.overland at gmail.com>> wrote:
>
>     Hi, my map is EPSG:900913 and running Google Maps nicely. The
>     following WMS feed is served both as EPSG:4326 and EPSG:900913 (have
>     a look at the WMS link in the table):
>
>     http://iridl.ldeo.columbia.edu/SOURCES/.USGS/.LandDAAC/.MODIS/.1km/.8day/.version_005/.Aqua/.EAF/.Night/.LST/X+Y+fig-+colors+coasts+-fig+//LST/255./330./plotrange//T/3118./plotvalue/Y/1.5405659E-04/39.99557/plotrange//plotborder+72+psdef//plotaxislength+432+psdef//XOVY+null+psdef/
>
>     When I do this:
>
>     var wms = new OpenLayers.Layer.WMS(
>     "IRI",
>     "http://iridl.ldeo.columbia.edu/SOURCES/.USGS/.LandDAAC/.MODIS/.1km/.8day/.version_005/.Aqua/.EAF/.Night/.LST/X+Y+fig-+colors+coasts+-fig+//LST/255./330./plotrange//T/3118./plotvalue/Y/1.5405659E-04/39.99557/plotrange//plotborder+72+psdef//plotaxislength+432+psdef//XOVY+null+psdef/wms.xml",
>          {
>             layers: "USGS LandDAAC MODIS 1km 8day version_005 Aqua EAF
>     Night LST",
>          }
>     );
>
>     ..I get a 4326 base layer. But I want it to work with my 900913 map
>     so I add to the params object:
>
>          {
>             layers: "USGS LandDAAC MODIS 1km 8day version_005 Aqua EAF
>     Night LST",
>             srs: "EPSG:900913",
>             bbox: "-2000000,1,6900000,4400000"
>          }
>
>     but it does not work. The getFullRequestString() returns a string
>     with the correct BBOX, but the SRS it still 4326.
>
>     To me it looks like only the first tile has 900913 and the rest
>     (twenty-something) have 4326. What am I doing wrong?
>
>     Jan
>
>
>
>
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