Re: [Geoserver-users] Geoserver Store NetCDF issue: Could not list layers

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Hi Daniele,

When I open ToolsUI I get five axisTypes, one for time and the other four for location as you suspected; lon, lat, GeoX and GeoY.
You mention that there is code to deal with this case, is that already implemented in the NetCDF-plugin?

Thank you for your help!

Kind regards,

Frank

________________________________
Från: Daniele Romagnoli [dan...@ge...]
Skickat: den 26 augusti 2019 16:39
Till: Van Der Stelt Frank
Kopia: Alexander Petkov; geo...@li...
Ämne: Re: [Geoserver-users] Geoserver Store NetCDF issue: Could not list layers

Hi Frank,
not 100% sure about the longitude variable issue.
I'm wondering if, for any reason, the datasets looks like having 4 2D Axis (both longitude,latitude and x,y projected coordinate axis) so it's like having both meter and degree coordinates being defined and supported (some very peculiar datasets contain multiple 2D grids definitions and multiple 2D dimensions and there is code to deal with that case).
If you open the dataset with ToolsUI and go through the "CoordSys" tab, how many "axisType" rows is reporting on the bottom table?

The alternative hypothesis I have in mind is that being the dataset a projected one, the lon and lat variables are handled as normal 2D variables (and not as coordinates since there is no dimensions for them). Being "lon" the first variable listed in your NetCDF, it's the first one spotting the WKT parsing problem when looking for the associated coordinate reference system during the variables scan.

Please, let us know.
Regards,
Daniele

On Thu, Aug 22, 2019 at 10:57 PM Van Der Stelt Frank <fra...@sm...<mailto:fra...@sm...>> wrote:
Thank you for your answer. I looked at this and found that this is a problem in geotools. When the WKT string is parsed the single quotes are changed to double quotes and the CRS factory doesn't like that. So I patched this part of geotools to get around this problem. The question remains why the NetCDF plugin looks at the lon variable at all. That one is included in the crun variable that has the projection defined.

Kind regards,

Frank van der Stelt

________________________________________
Från: Alexander Petkov [gre...@gm...<mailto:gre...@gm...>]
Skickat: den 22 augusti 2019 19:48
Till: Van Der Stelt Frank
Kopia: geo...@li...<mailto:geo...@li...>
Ämne: Re: [Geoserver-users] Geoserver Store NetCDF issue: Could not list layers

First, I would trace why this is happening:

org.geotools.coverage.io<http://org.geotools.coverage.io>.netcdf.crs.NetCDFProjection$CRSParser parseWKT
WARNING: Unable to setup a CRS from the specified WKT:
PROJCS['unnamed',GEOGCS['GRS 1980(IUGG,
1980)',DATUM['unknown',SPHEROID['GRS80',6378137,298.257222101],TOWGS84[0,0,0,0,0,0,0]],PRIMEM['Greenwich',0],UNIT['degree',0.0174532925199433]],PROJECTION['Transverse_Mercator'],PARAMETER['latitude_of_origin',0],PARAMETER['central_meridian',18],PARAMETER['scale_factor',1],PARAMETER['false_easting',150000],PARAMETER['false_northing',0],UNIT['Meter',1]]

Then take it from there.

Kind regards,
Alex

On 8/22/19, Van Der Stelt Frank <fra...@sm...<mailto:fra...@sm...>> wrote:
> Hi again,
>
> I'll try to rephrase the problem. When uploading a NetCDF file I get the
> "Could not list layers for this store" problem. The file follows the CF 1.6
> convention and can be read by qgis and other NetCDF-readers. I uploaded the
> file here.
>
> https://www.dropbox.com/s/ssanmgozpg16g5p/stockholm_110_historic_crun-monthly_mean.nc?dl=0
>
> The geoserver log-file says:
>
> Caused by: java.io.IOException: java.lang.IllegalArgumentException: Unable
> to find a CRS for the provided variable: lon
>
> I added the WKT-string in a file under the user_projections catalogue.
> Geoserver can find my CRS but for the lon-variable he still insists on the
> projection.
>
> Does anyone have any clue?
>
> Here is the NetCDF-header:
>
>
> netcdf stockholm_110_historic_crun-monthly_mean {
> dimensions:
>         x = 110 ;
>         y = 110 ;
>         time = UNLIMITED ; // (60 currently)
>         bnds = 2 ;
> variables:
>         float lon(y, x) ;
>                 lon:standard_name = "longitude" ;
>                 lon:long_name = "longitude" ;
>                 lon:units = "degrees_east" ;
>                 lon:_CoordinateAxisType = "Lon" ;
>                 lon:grid_mapping = "projection" ;
>         float lat(y, x) ;
>                 lat:standard_name = "latitude" ;
>                 lat:long_name = "latitude" ;
>                 lat:units = "degrees_north" ;
>                 lat:_CoordinateAxisType = "Lat" ;
>                 lat:grid_mapping = "projection" ;
>         float x(x) ;
>                 x:standard_name = "projection_x_coordinate" ;
>                 x:long_name = "x coordinate of projection" ;
>                 x:units = "m" ;
>                 x:axis = "X" ;
>         float y(y) ;
>                 y:standard_name = "projection_y_coordinate" ;
>                 y:long_name = "y coordinate of projection" ;
>                 y:units = "m" ;
>                 y:axis = "Y" ;
>         int projection ;
>                 projection:false_easting = 150000. ;
>                 projection:false_northing = 0. ;
>                 projection:grid_mapping_name = "projection" ;
>                 projection:latitude_of_projection_origin = 0. ;
>                 projection:longitude_of_central_meridian = 18. ;
>                 projection:proj4 = "+proj=tmerc +lat_0=0 +lon_0=18 +k=1
> +x_0=150000 +y_0=0 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs" ;
>                 projection:scale_factor_at_central_meridian = 1. ;
>                 projection:semi_major_axis = 6378137. ;
>                 projection:inverse_flattening = 298.257222101 ;
>                 projection:spatial_ref = "PROJCS[\"SWEREF99 18
> 00\",GEOGCS[\"SWEREF99\",DATUM[\"SWEREF99\",SPHEROID[\"GRS 1980\",
> 6378137.0, 298.257222101, AUTHORITY[\"EPSG\",\"7019\"]],TOWGS84[0.0, 0.0,
> 0.0, 0\
> .0, 0.0, 0.0, 0.0],AUTHORITY[\"EPSG\",\"6619\"]],PRIMEM[\"Greenwich\", 0.0,
> AUTHORITY[\"EPSG\",\"8901\"]],UNIT[\"degree\",
> 0.017453292519943295],AXIS[\"Geodetic latitude\", NORTH],AXIS[\"Geodetic
> longitude\", E\
> AST],AUTHORITY[\"EPSG\",\"4619\"]],PROJECTION[\"Transverse_Mercator\",
> AUTHORITY[\"EPSG\",\"9807\"]],PARAMETER[\"central_meridian\",
> 18.0],PARAMETER[\"latitude_of_origin\", 0.0],PARAMETER[\"scale_factor\",
> 1.0]\
> ,PARAMETER[\"false_easting\", 150000.0],PARAMETER[\"false_northing\",
> 0.0],UNIT[\"m\", 1.0],AXIS[\"Northing\", NORTH],AXIS[\"Easting\",
> EAST],AUTHORITY[\"EPSG\",\"3011\"]]" ;
>         float time(time) ;
>                 time:standard_name = "time" ;
>                 time:long_name = "time" ;
>                 time:bounds = "time_bnds" ;
>    time:units = "hours since 2006-01-01 00:00" ;
>                 time:calendar = "standard" ;
>                 time:axis = "T" ;
>         double time_bnds(time, bnds) ;
>         float crun(time, y, x) ;
>                 crun:long_name = "runoff" ;
>                 crun:units = "mm h-1" ;
>                 crun:grid_mapping = "projection" ;
>                 crun:coordinates = "lat lon" ;
>                 crun:_FillValue = -1.e+20f ;
>                 crun:missing_value = -1.e+20f ;
>                 crun:ModelAttributes = "{\'Hydrological Model\': \'HYPE\'}"
> ;
>                 crun:DataAttributes = "{\"ECV\": \"monthly mean\",
> \"ECV_calculated_on\": \"2017-10-25\"}" ;
>
> // global attributes:
>                 :history = "Wed Oct 25 16:19:58 2017: cdo monmean
> timeseries/stockholm_110_presclim_crun.nc<http://stockholm_110_presclim_crun.nc>
> ecvs/stockholm_110_presclim_crun-monthly_mean.nc<http://stockholm_110_presclim_crun-monthly_mean.nc>\nThu Jun 29 12:33:05 2017:
> ncks -4 /data/proj/UrbanSI\
> S/workspace/JR/hype2grid/Stockholm/Harmonie/timeCRUN.nc
> /data/proj/UrbanSIS/workspace/JR/hype2grid/Stockholm/Harmonie/publish/timeCRUN.nc\nThu
> Jun 29 12:32:44 2017: ncrcat /data/proj/UrbanSIS/workspace/JR/hype2\
> grid/Stockholm/Harmonie/timeCRUN-2006-2007_original_resampled.nc<http://resampled.nc>
> /data/proj/UrbanSIS/workspace/JR/hype2grid/Stockholm/Harmonie/timeCRUN-2012-2014_original_resampled.nc<http://original_resampled.nc>
> /data/proj/UrbanSIS/workspace/JR/hype2grid\
> /Stockholm/Harmonie/timeCRUN.nc" ;
>                 :Conventions = "CF-1.6" ;
>                 :contact1 = "Lena Stromback, SMHI, len...@sm...<mailto:len...@sm...>"
> ;
>                 :Originating_center = "Swedish Meteorological and
> Hydrological Institute (SMHI)" ;
>                 :Downscaling_model = "S-HYPE2012_version_4_0_0 adapted for
> Urban SIS" ;
>                 :Downscaling_projection = "SWEREF-99 1800" ;
>                 :Downscaled_area = "Watershed based on Urban Atlas" ;
>                 :Forcing_boundary_conditions = "Urban SIS Harmonie Stockholm
> historic" ;
>                 :Topography_routing = "SVAR
> http://www.smhi.se/publikationer/svar-svenskt-vattenarkiv-1.17833" ;
>                 :Land_use = "Urban Atlas 2012
> http://land.copernicus.eu/local/urban-atlas/urban-atlas-2012, CORINE Land
> COVER 2000
> http://www.eea.europa.eu/data-and-maps/data/corine-land-cover-2000-clc2000-seam\<http://www.eea.europa.eu/data-and-maps/data/corine-land-cover-2000-clc2000-seam%5C>
> less-vector-database" ;
>                 :Soil_type = "SGU http://www.sgu.se/" ;
>                 :Lake_information = "SVAR
> http://www.smhi.se/publikationer/svar-svenskt-vattenarkiv-1.17833" ;
>                 :nco_openmp_thread_number = 1 ;
>                 :NCO = "4.4.4" ;
>                 :frequency = "mon" ;
> data:
>
> ...
>
>
> Kind regards,
>
> Frank van der Stelt
> Systems developer
> SMHI - Swedish Meteorological and Hydrological Institute
>
>
>
>
>
>
>
>
>

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