[netcdf-java] Fwd: Cannot load a point feature dataset with rank 0 time

• To: netcdf-java@xxxxxxxxxxxxxxxx
• Subject: [netcdf-java] Fwd: Cannot load a point feature dataset with rank 0 time
• From: Shane StClair <shane@xxxxxxxxxxxxxxx>
• Date: Fri, 13 Dec 2013 16:17:36 -0800

Hi all,

Using NetCDF-Java 4.3.20, point feature datasets with rank 0 time cannot be
loaded. CFpointObs.getPointConfig checks the rank of the time axis and
errors if it's not equal to 1. Should point datasets with a single
non-varying time axis be supported?

Dataset structure is posted below, sample file attached.

Best,
Shane

netcdf /src/52n-sos-ioos-svn/coding-ioos-netcdf/target/netcdf-encoder-test/
test_1_air_temperature_point_2013-12-13T230000.000Z_75975923742301.nc {
  dimensions:
    feature_type_instance = 23;
  variables:
    char feature_type_instance(feature_type_instance=23);
      :long_name = "Identifier for each feature type instance";

    int crs;
      :long_name = "http://www.opengis.net/def/crs/EPSG/0/4326";;
      :grid_mapping_name = "latitude_longitude";
      :epsg_code = "EPSG:4326";
      :semi_major_axis = 6378137.0; // double
      :inverse_flattening = 298.257223563; // double

    double time;
      :standard_name = "time";
      :units = "seconds since 1970-01-01T00:00:00Z";
      :axis = "T";

    float latitude;
      :standard_name = "latitude";
      :long_name = "http://mmisw.org/ont/cf/parameter/latitude";;
      :units = "degrees_north";
      :axis = "Y";
      :_FillValue = -9999.9f; // float

    float longitude;
      :standard_name = "longitude";
      :long_name = "http://mmisw.org/ont/cf/parameter/longitude";;
      :units = "degrees_east";
      :axis = "X";
      :_FillValue = -9999.9f; // float

    float height;
      :standard_name = "height";
      :long_name = "http://mmisw.org/ont/cf/parameter/height";;
      :units = "m";
      :axis = "Z";
      :positive = "up";
      :_FillValue = -9999.9f; // float

    int platform;
      :ioos_code = "urn:ioos:station:test:1";
      :comment = "Test station 1";
      :short_name = "Test station 1";
      :long_name = "Station number 1 for testing";
      :source = "moored_buoy";

    int instrument;
      :definition = "http://mmisw.org/ont/ioos/definition/sensorID";;
      :long_name = "urn:ioos:sensor:test:1:air_temperature";

    float air_temperature;
      :coordinates = "time latitude longitude height";
      :_FillValue = -9999.9f; // float
      :units = "Cel";
      :standard_name = "air_temperature";
      :long_name = "http://mmisw.org/ont/cf/parameter/air_temperature";;

  // global attributes:
  :Conventions = "CF-1.6";
  :Metadata_Conventions = "Unidata Dataset Discovery v1.0";
  :featureType = "point";
  :cdm_data_type = "Point";
  :nodc_template_version = "NODC_Point_Template_v1.0";
  :standard_name_vocabulary = "CF-1.6";
  :platform = "platform";
  :instrument = "instrument";
  :title = "urn:ioos:sensor:test:1:air_temperature";
  :summary = "Sensor observations for
urn:ioos:sensor:test:1:air_temperature, feature type point";
  :processing_level = "none";
  :date_created = "2013-12-13T23:47:11.818Z";
  :license = "Freely Distributed";
  :uuid = "e854cbcc-0227-43cb-9bfe-7e4df41e3340";
  :id = "urn:ioos:sensor:test:1:air_temperature";
  :naming_authority = "test";
  :keywords = "test,1,air_temperature";
  :institution = "test";
  :contributor_role = "operator";
  :contributor_name = "NDBC";
  :publisher_name = "Some Publisher";
  :publisher_email = "info@xxxxxxxxxxxxxxxxx";
  :publisher_url = "http://somepublisher.org";;
  :geospatial_lat_min = -158.41293102804596; // double
  :geospatial_lat_max = -158.41293102804596; // double
  :geospatial_lat_units = "degrees_north";
  :geospatial_lon_min = -44.62965258444942; // double
  :geospatial_lon_max = -44.62965258444942; // double
  :geospatial_lon_units = "degrees_east";
  :time_coverage_start = "2013-12-13T23:00:00.000Z";
  :time_coverage_end = "2013-12-13T23:00:00.000Z";
}



-- 
Shane StClair
Software Engineer
Axiom Consulting & Design
http://www.axiomalaska.com

Attachment: test_1_air_temperature_point_2013-12-13T230000.000Z_75975923742301.nc
Description: Cdf file

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  • Re: [netcdf-java] Fwd: Cannot load a point feature dataset with rank 0 time
    • From: John Caron