NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
Ethan, That's great that Albers, LCC and others should work with TDS 4.3 WMS. That means it should work on: http://motherlode.ucar.edu:9080/thredds which is at TDS 4.3.15. So on that server, I can get this WMS request to work using EPSG:4326: http://motherlode.ucar.edu:9080/thredds/wms/grib/NCEP/NAM/CONUS_12km/files/NAM_CONUS_12km_20121017_1200.grib2?LAYERS=Temperature_height_above_ground&ELEVATION=2&TIME=2012-10-17T12%3A00%3A00.000Z&TRANSPARENT=true&STYLES=boxfill%2Frainbow&CRS=EPSG%3A4326&COLORSCALERANGE=263.7%2C302.6&NUMCOLORBANDS=20&LOGSCALE=false&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&FORMAT=image%2Fpng&SRS=EPSG%3A4326&BBOX=-128.16154395928,13.676912081443,-76.323087918557,65.515368122164&WIDTH=256&HEIGHT=256 But I can't get anything else to work. Can you provide a modified version of the above request that works for Albers (EPSG:9822) or LCC (EPSG:9802) -Rich On Wed, Oct 17, 2012 at 11:55 AM, Ethan Davis <edavis@xxxxxxxxxxxxxxxx> wrote: > Hi Rich, > > Even if a CRS is not listed, both ncWMS and TDS WMS can handle requests > for any CRS supported by the underlying GeoToolkit library. The CRS > database in TDS 4.2 does not contain EPSG CRS 9822 or 9802. However, > they should both be available in TDS 4.3. So, if you are trying this on > a TDS 4.3, you can just give it a try. > > As for the WMS GetCapabilities CRS list, it is currently not user > configurable. For TDS 4.3 it would simply be a matter of a minor code > change (adding the two EPSG numbers to a list) and then rebuilding. It > is a bit more work in TDS 4.2, but not much harder, along with adding > the EPSG number to a list, we would need a WKT for each of the new > projections. (The CRS WKT needs to be in a form the GeoToolkit can read.) > > We've kept the list to a minimum because in earlier versions we listed > all available projections and the list got quite large. > > Are you using TDS 4.3? Do you need these CRS to be in the list or is > being able to request them enough? > > Cheers, > > Ethan > > On 10/17/2012 8:17 AM, Rich Signell wrote: >> TDS folks, >> >> What would it take to get Albers or LCC supported as a projection on >> the TDS WMS? >> >> According to the WMS getCapabilities (for example: >> http://motherlode.ucar.edu/thredds/wms/fmrc/NCEP/GFS/CONUS_191km/NCEP-GFS-CONUS_191km_best.ncd?service=WMS&version=1.3.0&request=GetCapabilities >> >> the supported projections are: >> <Title>Motherlode TDS</Title> >> <CRS>EPSG:4326</CRS> >> <CRS>CRS:84</CRS> >> <CRS>EPSG:41001</CRS> >> <CRS>EPSG:3857</CRS> >> <CRS>EPSG:27700</CRS> >> <CRS>EPSG:3408</CRS> >> <CRS>EPSG:3409</CRS> >> <CRS>EPSG:32661</CRS> >> <CRS>EPSG:32761</CRS> >> >> Okay, so we don't see Albers Equal Area (EPSG:9822) or Lambert Conformal >> Conic 2SP (EPSG:9802) on the list. >> >> But TDS WMS is based on ncWMS, and on the ncWMS FAQ at: >> >> http://www.resc.rdg.ac.uk/trac/ncWMS/wiki/FrequentlyAskedQuestions >> >> it says that ncWMS "can produce images in any projection that is >> supported by the GeoTools library". >> >> And it appears that GeoTools can support both Albers and LCC: >> >> http://docs.geotools.org/latest/javadocs/org/geotools/referencing/operation/projection/package-summary.html >> >> So would it be straightforward (or perhaps even easy) to allow the TDS >> WMS to support these? >> >> Thanks, >> Rich >> > > -- > Ethan Davis UCAR Unidata Program > edavis@xxxxxxxxxxxxxxxx http://www.unidata.ucar.edu > > _______________________________________________ > thredds mailing list > thredds@xxxxxxxxxxxxxxxx > For list information or to unsubscribe, visit: > http://www.unidata.ucar.edu/mailing_lists/ -- Dr. Richard P. Signell (508) 457-2229 USGS, 384 Woods Hole Rd. Woods Hole, MA 02543-1598
thredds archives: