On Thu, Sep 15, 2011 at 11:07 AM, Cecile Robin <[email protected]>wrote:
> Hello,
> I'm very interested in cascading Demis layers, especially the "Cities" one,
> in order to reproject it. I managed to have the GetCapabilities and GetMap
> working on my geoserver 2.1.1 with the demis cities layer cascaded.
> However I can't get the layer to display properly on epsg:4326 background
> (used Qgis)
>
GeoServer 2.1.1 won't play well with a WMS 1.3 server.
Use this url forcing the 1.1.0 version instead:
http://www2.demis.nl/wms/wms.ashx?WMS=WorldMap&version=1.1.0&request=GetCapabilities
I've just did so and it cascades fine with our test GeoServer (which is a
2.2.x, trunk, unstable
series though):
http://demo1.geo-solutions.it/playground/GeoSolutions/wms?service=WMS&version=1.1.0&request=GetMap&layers=GeoSolutions:Cities&styles=&bbox=-180.0,-55.0,180.0,75.0&width=913&height=330&srs=EPSG:4326&format=application/openlayers
That said, GeoServer will reproject the map, but doing reprojection inside
GeoServer will
ruin the labels. Reprojection along with cascading works usually fine with
raster data,
introduces visible issues when using vector data, but makes labels
completely unreadable,
the problem is that GeoServer has only the pixels returned by the WMS to do
the reprojection,
and often reprojections stretch the pixels vertically or horizontally a lot
Cheers
Andrea
--
-------------------------------------------------------
Ing. Andrea Aime
GeoSolutions S.A.S.
Tech lead
Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 962313
http://www.geo-solutions.it
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http://www.linkedin.com/in/andreaaime
http://twitter.com/geowolf
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