Hi Steve, I will open a JIRA to add default values for unspecified datum . (as far as I can see, NetCDF uses a Default sphere with radius = 6371229 if nothing is specified).
In the meantime, you could add a "earth_radius" double attribute = 6371229 to the Lambert_Conformal variable of your NetCDF. Finally, as reported in the NetCDF GeoServer documentation <http://docs.geoserver.org/latest/en/user/community/netcdf/netcdf.html#supporting-custom-netcdf-coordinate-reference-systems>, please, make sure to add a proper entry to the netCDF custom epsgs. Something like this on a single line (see documentation): PROJCS["lambert_conformal_conic_2SP", GEOGCS["unknown", DATUM["unknown", SPHEROID["unknown", 6371229.0, 0.0]], PRIMEM["Greenwich", 0.0], UNIT["degree", 0.017453292519943295], AXIS["Geodetic longitude", EAST], AXIS["Geodetic latitude", NORTH]], PROJECTION["Lambert_Conformal_Conic_2SP"], PARAMETER["central_meridian", -98.0], PARAMETER["latitude_of_origin", 89.9999], PARAMETER["standard_parallel_1", 60.0], PARAMETER["false_easting", 0.0], PARAMETER["false_northing", 0.0], PARAMETER["scale_factor", 1.0], PARAMETER["standard_parallel_2", 30.0], UNIT["m", 1.0], AXIS["Easting", EAST], AXIS["Northing", NORTH]] This will allow GeoServer to recognize the projection exposed in the NetCDF dataset. Hope this helps. Cheers, Daniele On Fri, Sep 18, 2015 at 3:46 PM, Ferguson, Steve -FS <sfergu...@fs.fed.us> wrote: > I am attempting to load a netcdf file in geoserver-2.8-RC1 ( > http://mtnweather.info/download/wrf_works.nc). With the same file loaded > into netcdf-toolsUI I am able to view grids, so I would think the netcdf > file might also be valid in geoserver. Upon attempting to add the store, I > receive the error : Could not list layers for this store, an error occurred > retrieving them. Any help in understanding and resolving this error would > be greatly appreciated. > > > > The detailed error message reported on the console is : > > > > > > WARN [netcdf.NetCDFGeoreferenceManager] - Unsupported axis: double > lat(y=449, x=599); > > :axis = "Y"; > > :units = "degrees_north"; > > :long_name = "latitude"; > > :standard_name = "latitude"; > > :_CoordinateAxisType = "Lat"; > > in input: C:/projects/firewx/wrf_works.nc has been found > > WARN [netcdf.NetCDFGeoreferenceManager] - Unsupported axis: double > lon(y=449, x=599); > > :axis = "X"; > > :units = "degrees_east"; > > :long_name = "longitude"; > > :standard_name = "longitude"; > > :_CoordinateAxisType = "Lon"; > > in input: C:/projects/firewx/wrf_works.nc has been found > > 18 Sep 06:08:17 WARN [netcdf.NetCDFFormat] - Unable to connect > > org.geotools.data.DataSourceException: Unable to connect > > at > org.geotools.coverage.io.netcdf.NetCDFReader.<init>(NetCDFReader.java:158) > > at > org.geotools.coverage.io.netcdf.NetCDFFormat.getReader(NetCDFFormat.java:95) > > at > org.geoserver.catalog.ResourcePool.getGridCoverageReader(ResourcePool.java:1441) > > at > org.geoserver.catalog.ResourcePool.getGridCoverageReader(ResourcePool.java:1369) > > > > …. > > > > Caused by: java.lang.NullPointerException > > at > org.geotools.coverage.io.netcdf.crs.ProjectionBuilder.createEllipsoid(ProjectionBuilder.java:255) > > at > org.geotools.coverage.io.netcdf.crs.NetCDFProjection.buildEllipsoid(NetCDFProjection.java:453) > > at > org.geotools.coverage.io.netcdf.crs.NetCDFProjection.parseProjection(NetCDFProjection.java:323) > > at > org.geotools.coverage.io.netcdf.crs.NetCDFProjection.lookForVariableCRS(NetCDFProjection.java:532) > > at > org.geotools.imageio.netcdf.NetCDFGeoreferenceManager.extractBBOX(NetCDFGeoreferenceManager.java:261) > > at > org.geotools.imageio.netcdf.NetCDFGeoreferenceManager.<init>(NetCDFGeoreferenceManager.java:155) > > at > org.geotools.imageio.netcdf.NetCDFImageReader.init(NetCDFImageReader.java:443) > > at > org.geotools.imageio.netcdf.NetCDFImageReader.setInput(NetCDFImageReader.java:258) > > > > > > When I look at the code for this error in geotools, it looks like this : > > > > public static Ellipsoid createEllipsoid(String name, Map<String, Number> > ellipsoidParams) { > > Number semiMajor = null; > > Number semiMinor = null; > > Number inverseFlattening = Double.NEGATIVE_INFINITY; > > if (ellipsoidParams.containsKey(NetCDFUtilities.SEMI_MAJOR)) { > > semiMajor = ellipsoidParams.get(NetCDFUtilities.SEMI_MAJOR); > > } > > if (ellipsoidParams.containsKey(NetCDFUtilities.SEMI_MINOR)) { > > semiMinor = ellipsoidParams.get(NetCDFUtilities.SEMI_MINOR); > > } > > if > (ellipsoidParams.containsKey(NetCDFUtilities.INVERSE_FLATTENING)) { > > inverseFlattening = > ellipsoidParams.get(NetCDFUtilities.INVERSE_FLATTENING); > > } > > if (semiMinor != null) { > > return DefaultEllipsoid.createEllipsoid(name, > semiMajor.doubleValue(), > > semiMinor.doubleValue(), SI.METER); > > } else { > > return DefaultEllipsoid.createFlattenedSphere(name, > semiMajor.doubleValue(), /// --- *NPE HERE semiMajor remains null.* > > inverseFlattening.doubleValue(), SI.METER); > > } > > } > > > > Thanks! > > > > > > > > *Steve Ferguson* > Application Developer > > This electronic message contains information generated by the USDA solely > for the intended recipients. Any unauthorized interception of this message > or the use or disclosure of the information it contains may violate the law > and subject the violator to civil or criminal penalties. If you believe you > have received this message in error, please notify the sender and delete > the email immediately. > > > > > ------------------------------------------------------------------------------ > > _______________________________________________ > Geoserver-users mailing list > Geoserver-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/geoserver-users > > -- == GeoServer Professional Services from the experts! Visit http://goo.gl/it488V for more information. == Ing. Daniele Romagnoli Senior Software Engineer GeoSolutions S.A.S. 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