[OpenLayers-Users] Problems adding a WMS layer
James Lamanna
james at touchtable.com
Tue Aug 21 11:43:39 PDT 2012
I also should mention that my map is intialized like this, with an
ArcGISOnline base layer:
map = new OpenLayers.Map('map', {
displayProjection: new OpenLayers.Projection('EPSG:4326'),
});
var arcGISBase = new OpenLayers.Layer.XYZ("Basemap",
"http://services.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer/tile/${z}/${y}/${x}",
{
sphericalMercator: true,
maxExtent: new
OpenLayers.Bounds(-20037508.34,-20037508.34,20037508.34,20037508.34),
transitionEffect: 'resize',
resolutions: [156543.03390625, 78271.516953125,
39135.7584765625,
19567.87923828125, 9783.939619140625, 4891.9698095703125,
2445.9849047851562, 1222.9924523925781, 611.4962261962891,
305.74811309814453, 152.87405654907226, 76.43702827453613,
38.218514137268066, 19.109257068634033, 9.554628534317017,
4.777314267158508, 2.388657133579254, 1.194328566789627,
0.5971642833948135, 0.25, 0.1, 0.05],
serverResolutions: [156543.03390625, 78271.516953125,
39135.7584765625,
19567.87923828125, 9783.939619140625,
4891.9698095703125, 2445.9849047851562,
1222.9924523925781, 611.4962261962891,
305.74811309814453, 152.87405654907226,
76.43702827453613, 38.218514137268066,
19.109257068634033, 9.554628534317017,
4.777314267158508, 2.388657133579254,
1.194328566789627, 0.5971642833948135],
}
);
On 8/21/2012 11:29 AM, James Lamanna wrote:
> Hi,
> I'm trying to add a WMS layer from national atlas:
>
> var wms = new OpenLayers.Layer.WMS(
> 'states',
> 'http://webservices.nationalatlas.gov/wms/boundaries',
> {
> layers: 'states',
> transparent: true,
> version: '1.3.0'
> });
>
> map.addLayer(wms);
>
> It doesn't seem to request any tiles until I zoom WAY out on the map,
> and then I get a request like this:
>
> http://webservices.nationalatlas.gov/wms/boundaries?LAYERS=states&TRANSPARENT=TRUE&VERSION=1.3.0&EXCEPTIONS=INIMAGE&SERVICE=WMS&REQUEST=GetMap&STYLES=&FORMAT=image%2Fpng&CRS=EPSG%3A900913&BBOX=-90,-180,19580220.616111,19580130.616111&WIDTH=256&HEIGHT=256
>
>
> Why are the coordinates for the BBOX in 2 different coordinate systems?
>
> Do I need to specify a resolutions list or what?
> It should be requesting tiles when I'm at a reasonable zoom level as well.
>
> Thanks.
>
> -- James
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