Hi Björn
The module is part of geotools and used by geoserver. Since I do not want
to break existing behaviour I can imagine the following solution.
Adding a new xml configuration element <ignoreAxisOrder> which defaults to
false. If it is true, I can skip the code switching the x and y values.
In your concrete example, I assume if ignoreAxisOrder is true, your WMS
1.3.0 request will work but the WMS 1.0 requests will not. But we have to
test.
Cheers
Christian
On 28 February 2013 10:46, Björn Höfling
<[email protected]>wrote:
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> Cross-posting to both geoserver and geotools, because I'm not sure
> where to correct this.
>
> I have a JDBC-Imagepyramid datasource with a custom JDBCAccess class
> and a config with <coordsys name="EPSG:31468"/>.
>
> I try to access the data with the following WMS requests but WMS 1.3.0
> fails:
>
> #WMS 1.1.0, WGS84: works!
>
>
> http://localhost:9090/geoserver/bvv/wms?SERVICE=WMS&VERSION=1.1.0&REQUEST=GetMap&BBOX=8.94724122,47.21154077,14.04130521,50.60175200&CRS=EPSG:4326&WIDTH=233&HEIGHT=231&LAYERS=dopjdbc&STYLES=&FORMAT=image/png&DPI=120&TRANSPARENT=TRUE
>
> #WMS 1.3.0, WGS84: fails!
>
>
> http://localhost:9090/geoserver/bvv/wms?SERVICE=WMS&VERSION=1.1.0&REQUEST=GetMap&BBOX=47.21154077,8.94724122,50.60175200,14.04130521&CRS=EPSG:4326&WIDTH=233&HEIGHT=231&LAYERS=dopjdbc&STYLES=&FORMAT=image/png&DPI=120&TRANSPARENT=TRUE
>
> # WMS 1.1.0, 31468, false_easting first: works
>
>
> http://localhost:9090/geoserver/bvv/wms?SERVICE=WMS&VERSION=1.1.0&REQUEST=GetMap&BBOX=4268853.907215,5234843.881984,4644617.698124,5609332.108789&CRS=EPSG:31468&WIDTH=233&HEIGHT=231&LAYERS=dopjdbc&STYLES=&FORMAT=image/png&DPI=120&TRANSPARENT=TRUE
>
> #WMS 1.3.0, 31468, false_northing first: fails
>
>
> http://localhost:9090/geoserver/bvv/wms?SERVICE=WMS&VERSION=1.3.0&REQUEST=GetMap&BBOX=5234843.881984,4268853.907215,5609332.108789,4644617.698124&CRS=EPSG:31468&WIDTH=233&HEIGHT=231&LAYERS=dopjdbc&STYLES=&FORMAT=image/png&DPI=120&TRANSPARENT=TRUE
>
>
> With WMS 1.1.0 and axis-order false_easting first (=x first), I see
> the expected map.
>
> But with WMS 1.3.0 and axis-order false_northing (=y) first, I get an
> empty map. When I look into the logs, this is no wonder:
>
>
> 27 Feb 16:27:41 WARN [org.geotools.gce.imagemosaic.jdbc] - The
> requested envelope does not intersect the envelope of this mosaic,
> result is a nodata image
>
> 27 Feb 16:27:41 WARN [org.geotools.gce.imagemosaic.jdbc] -
> GeneralEnvelope[(5217821.6898565, 4253533.065954762),
> (5624733.139761499, 4661551.259516895)]
>
> 27 Feb 16:27:41 WARN [org.geotools.gce.imagemosaic.jdbc] -
> GeneralEnvelope[(4282000.0, 5238000.0), (4636000.0, 5606000.0)]
>
>
> I further investigated this and found a problem in
>
> ImageMosaicJDBCReader.transformRequestEvelope
>
> With 1.1.0, input CRS (=state.requestEnvelope().getCoordRefSystem())
> has EAST, NORTH. Is identical to this.crs. Identiy, return fine.
>
> Now with WMS 1.3.0 we get as input CRS axis-order NORTH,EAST.
> We calculate a MathTransform which is as expected the affine
> transposition. Fine until here.
>
> But then comes a section starting with the comment
>
> //x Axis problem???
>
> Here is the problem: Axis order is AGAIN switched, in this case in the
> envelope. From my use case I would totally remove this section,
> because it is already handled in GeoServer. But I have no idea in
> which other cases this code makes sense (outside of GeoServer?).
>
>
> Björn
>
>
> - --
> Dipl.-Inf. Björn Höfling
> Software Developer (GIS, Java)
> http://www.bjoernhoefling.de/
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