Hi Paddy,
if you can open a JIRA containing sample data, config files and requests
needed to replicate the issue, we could investigate on that and check the
problem through a debug session.
I'm wondering if the z dimension has been configured/recognized as
elevation / custom dimension.
Please, let us know.
Cheers,
Daniele
On Fri, Apr 15, 2016 at 5:19 PM, Padhrig Mccarthy <pa...@ucar.edu> wrote:
> Hi-
>
> This is report of a recent discovery I made after repeatedly banging my
> head against the wall, so I thought I should write it up here to help
> future users. Basically, you MUST define your elevation dimension as a
> Double in your schema (using ImageMosaic indexer.xml), even if your NetCDF
> files define the z dimension as a float. Otherwise you get exceptions when
> making WCS requests that say "illegal dataType: String not supported in
> netcdf-3"
>
> I was getting the following error when accessing my NetCDF-based
> ImageMosaic with a request (to a private host) such as this:
>
> http://nnew-vm9:8089/geoserver/RAL_WCS/wcs?service=WCS&version=2.0.0&request=GetCoverage&coverageId=RAL_WCS:CAT_GPML_GTG&subset=time(
> "2016-04-14T02:00:00.000Z")&subset=elevation("13.411")&subset=LEADSECONDS("0")&format=application/x-netcdf4
> (LEADSECONDS is a custom variable I've defined for our ImageMosaic)
>
> Error returned in browser (similar in GeoServer logs):
> <ows:Exception exceptionCode="NoApplicableCode">
> <ows:ExceptionText>
> java.lang.IllegalArgumentException: illegal dataType: String not supported
> in netcdf-3 illegal dataType: String not supported in netcdf-3 []
> </ows:ExceptionText>
> </ows:Exception>
>
> FYI, a the equivalent WMS request worked fine:
>
> http://nnew-vm9:8089/geoserver/RAL_WCS/wms?service=WMS&version=1.1.0&request=GetMap&layers=RAL_WCS:CAT_GPML_GTG&styles=gtg&bbox=-120.0,22.0,-60.0,50.0&width=768&height=573&srs=EPSG:4326&format=image/png&time=2016-04-14T02:00:00.000Z&elevation=13.411&DIM_LEADSECONDS=0
>
> When I changed the schema config from this:
> <schema name="default" >
>
> <attributes>the_geom:Polygon,location:String,imageindex:Integer,time:java.util.Date,z:Float,fileDate:java.util.Date,leadSeconds:Integer</attributes>
> </schema>
>
> to this:
> <schema name="default" >
>
> <attributes>the_geom:Polygon,location:String,imageindex:Integer,time:java.util.Date,z:Double,fileDate:java.util.Date,leadSeconds:Integer</attributes>
> </schema>
> the request started to work, returning a NetCDF file, instead of the
> misleading exception text.
>
> Also FYI, the NetCDF file headers look like this (note the float data type
> for dimension z):
> /d1/nnew/GeoServer/8089_server/GTG_index: ncdump -h
> ../GTG_granules/lambert_sample_20160414T020000000Z_l_0000000.nc
>
> netcdf lambert_sample_20160414T020000000Z_l_0000000 {
>
> dimensions:
>
> time = 1 ;
>
> x = 451 ;
>
> y = 337 ;
>
> z = 46 ;
>
> variables:
>
> double time(time) ;
>
> time:standard_name = "time" ;
>
> time:long_name = "data valid time" ;
>
> time:units = "seconds since 1970-01-01T00:00:00Z" ;
>
> time:calendar = "gregorian" ;
>
> time:axis = "T" ;
>
> time:reference_date = "2016-04-14T02:00:00Z" ;
>
> float x(x) ;
>
> x:standard_name = "projection_x_coordinate" ;
>
> x:units = "km" ;
>
> x:axis = "X" ;
>
> float y(y) ;
>
> y:standard_name = "projection_y_coordinate" ;
>
> y:units = "km" ;
>
> y:axis = "Y" ;
>
> float lat(y, x) ;
>
> lat:standard_name = "latitude" ;
>
> lat:units = "degrees_north" ;
>
> float lon(y, x) ;
>
> lon:standard_name = "longitude" ;
>
> lon:units = "degrees_east" ;
>
> float z(z) ;
>
> z:standard_name = "altitude" ;
>
> z:long_name = "Specific altitude above mean sea level" ;
>
> z:units = "km" ;
>
> z:positive = "up" ;
>
> z:axis = "Z" ;
>
> int grid_mapping ;
>
> grid_mapping:grid_mapping_name = "lambert_conformal_conic" ;
>
> grid_mapping:longitude_of_central_meridian = -95.f ;
>
> grid_mapping:latitude_of_projection_origin = 25.f ;
>
> grid_mapping:standard_parallel = 25.f ;
>
> float CAT_GPML(time, z, y, x) ;
>
> CAT_GPML:valid_min = 0.f ;
>
> CAT_GPML:valid_max = 0.5949897f ;
>
> CAT_GPML:_FillValue = -9999.f ;
>
> CAT_GPML:long_name = "Clear Air Turbulence (CAT)" ;
>
> CAT_GPML:units = "%" ;
>
> CAT_GPML:coordinates = "lon lat" ;
>
> CAT_GPML:grid_mapping = "grid_mapping" ;
>
>
> // global attributes:
>
> :Conventions = "CF-1.6" ;
>
> :source = "US NWS - NCEP - Aviation Weather Center" ;
>
> :title = "Rapid Refresh (RAP)" ;
>
> :history = "Converted to NetCDF from Grib2 with Grib2toNc from NCAR-RAL." ;
>
> }
>
>
>
>
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