Application: gvSIG desktop

Hello, Pau. A question:

How do you deal with coordinate systems when using WFS servers?
Do you set the view to the CRS of the WFS because you don't want to reproject it?
Do you set the view to the CRS of the WFS because reprojection does not work?

gvsig-gpe:r272
gvsig-desktop:r39696

Some improvements made, but it doesn't work in all cases:

- If the CRS uses meters (EPSG:23030, EPSG:25830, etc), then it will probably work. In some cases, it does not work because the
server is not well configured or the geometries are not properly parsed by gvSIG.

- If the CRS is geodetic (EPSG:4326, EPSG:4258) and the server version is 1.1.0, then it does not work because gvSIG still does not support the new axis order.

Hello,

I did not test WFS with different coordinate systems, because I thought that the problem was with the geometry tags <shape>. I always tested views with the same CRS of WFS service.

I've been testing a WFS service with different CRS:

http://www.idee.es/IGN-WFS-SIGLIM/ogcwebservice (WFS version 1.1.0)

- With the same ellipsoid, no error. View in EPSG:25830, and WFS service in EPSG:4258.
- With different ellipsoid, there is a displacement. View in EPSG:23030, anf WFS service in EPSG:4258.

Juan Lucas Domínguez wrote:

Hello, Pau. A question:

How do you deal with coordinate systems when using WFS servers?
Do you set the view to the CRS of the WFS because you don't want to reproject it?
Do you set the view to the CRS of the WFS because reprojection does not work?

Hello.

The displacement happens because in the WFS form, there is no option to set the correct transformation, so gvSIG uses the standard transformation between the ellipsoids, which is not very precise.

That server http://www.idee.es/IGN-WFS-SIGLIM/ogcwebservice is strange because it says it is version 1.1.0 but it uses the coordinates in the old style (lon, lat) and that is why we can see it in the current version of gvSIG (normally we cannot use WFS 1.1.0 servers using geodetic CRS like EPSG:4326 or EPSG:4258)

The next issue that needs to be solved is this. I think brackets "(" and ")" are not properly used in our requests:

<ows:ExceptionReport xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ows="http://www.opengis.net/ows" version="1.1.0" language="en-US" xsi:schemaLocation="http://www.opengis.net/ows http://schemas.opengis.net/ows/1.0.0/owsExceptionReport.xsd">
<ows:Exception exceptionCode="PROPERTYNAME" locator="InvalidParameterValue">
<ows:ExceptionText>msWFSGetFeature(): WFS server error. Optional PROPERTYNAME parameter. A list of properties may be specified for each type name. Example TYPENAME=name1&name2&PROPERTYNAME=(prop1,prop2)(prop1)</ows:ExceptionText>
</ows:Exception>
</ows:ExceptionReport>