Hi Bart,
Sounds like the Projection class should be able to provide the CRS code
if it can. Heck, that could even be a property setting in case you
want to customize it a little.
I'm pretty sure WMS servers aren't required to support all projections,
only the 4326. The getCapabilities() request is one way to find out
what projection types are supported, but OpenMap's WMS client doesn't
have a getCapabilities() transaction (although it needs one, to figure
out what layers/projections are available, it would be great).
- Don
On Dec 8, 2004, at 8:09 AM, Bart Jourquin wrote:
> Hi Don and OpenMap users,
>
> It seems that the WMS client implementation in Openmap doesn't
> support many projection types. In fact, it seems that the map request
> only asks for EPSG:4326 projections.
>
> I would suggest to modify createQueryString(Projection p) in order
> to build a better getMap request. Depending on p, the following
> changes could be introduced:
>
> if (p instanceof LLXY || p instanceof CADRG) {
> // use CRS=CRS:84
> }
>
> if (p instanceof Mercator) {
> // use CRS=AUTO2:42001 (or 42002, I'm not so sure)
> }
>
> if (p instanceof Orthographic) {
> // use CRS=AUTO2:42003
> }
>
> The current implementation uses "SRS=EPSG:43226", but reading the WMS
> specifications, I think that using "CRC" (Coordinate reference system)
> instead of "SRS" (Spatial Reference System) is more inline with the
> specs. That's why I propose CRS=CRS:84.
>
> BTW, does is there a possibility to ask a WMS server for a gnomonic
> map?
>
> Regards,
>
> Bart
>
>
>
> ----
> Prof Dr Bart Jourquin
> F.U.Ca.M. - G.T.M.
> Chaussée de Binche, 151a, B7000 Mons (Belgium)
> Tel. : +32 65 323293, Fax. : +32 65 315691
> http://www.fucam.ac.be/jourquin
>
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Don Dietrick, dietrick_at_bbn.com
BBN Technologies, Cambridge, MA
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
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Received on Thu Dec 09 2004 - 11:33:28 EST