Thanks David for this clarification..I tested and now the EPSG is the correct one. I think that this approach it's the better solution. Should I submit a pull request?
Ciao L. 2011/8/22 David Winslow <[email protected]>: > In mainline GeoNode we use OWSLib to get this information. Apparently the > coder who added this bit didn't realize that in the WMS capabilities > document the SRS's listed are ones that the server can use for display, not > the native projection for the format. Looking into it, I don't think we can > use WMS for this at all - AFAICT there is no standard way to identify the > native projection of a layer via WMS. (Maybe using the CRS associated with > the BoundingBox for the layer would do it.) > > Fortunately we have access to the GeoServer REST API so we can just use {% > layer.resource.projection %} instead. Indeed, that is what the Worldmap > guys are copying into the Django database in the snippet you posted. Since > we can fix this problem without modifying the database schema I would like > to, modifying the schema would complicate the upgrade process a bit and our > documentation is lacking already. > > -- > David Winslow > OpenGeo - http://opengeo.org/ > > On Mon, Aug 22, 2011 at 3:26 AM, [email protected] > <[email protected]> wrote: >> >> Hi Stefano, >> >> 2011/8/22 Stefano Menegon <[email protected]>: >> > Hi Luca, >> > >> > >> >> for every data, the Native SRS shown is always 32044. Looking at the >> >> code it seems that the problem is in: >> >> {% if layer.metadata.crsOptions %}<p> <strong>{% trans "Native SRS" >> >> %}:</strong> {{ layer.metadata.crsOptions.0|default:_("No SRS >> >> specified.") }} </p>{% endif %} >> >> >> >> layer.metadata.crsOptions is a big list of CRS and >> >> layer.metadata.crsOptions.0 gives EPSG:32044. >> >> >> >> Any idea? >> >> Thx >> > >> > I investigated it a few weeks ago. >> > The param "layer.metadata.crsOptions" is the list of all the CRS >> > supported by geoserver wms. >> > So, it always displays the first of these CRS, not realy the native SRS. >> > >> > You can configure the "Limited SRS list" option (Geoserver - Services >> > - WMS) in order to change the layer.metadata.crsOptions value, >> > however, I do not know how to get the native SRS value. >> > >> > //stefano menegon >> > >> >> I double checked with World Map and the Layer class has got an srs >> attribute: >> >> https://github.com/cga-harvard/cga-worldmap/blob/master/src/GeoNodePy/geonode/maps/models.py#L842 >> >> If I am not wrong the value is set here: >> >> https://github.com/cga-harvard/cga-worldmap/blob/master/src/GeoNodePy/geonode/maps/models.py#L1283 >> >> Then in the template you have got layer.srs >> >> Ciao >> Luca >> >> >> -- >> Luca Casagrande >> twitter: lucacasagrande > > -- Luca Casagrande twitter: lucacasagrande
