[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[netCDFJava #REC-257012]: PointFeatureCollection iterator throwing NullPointerException

This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.

  • Subject: [netCDFJava #REC-257012]: PointFeatureCollection iterator throwing NullPointerException
  • Date: Mon, 20 Apr 2009 18:03:21 -0600
Im guessing you sent me the wrong file?? 

BTW, these should be sufficient attributes, which already exist in the file:

 :Conventions = "CF-1.4";
 :featureType = "point";

netcdf D:/work/arnaud/turbinesCEDCft.nc {
 dimensions:
   rec_num = UNLIMITED;   // (0 currently)
   stn_id_len = 8;
 variables:
   int obs_interval;
     :long_name = "Observation Time Interval";
     :units = "seconds";
   int obs_time(rec_num=0);
     :long_name = "observation time";
     :axis = "T";
     :units = "seconds since 1970-01-01 00 UTC";
   int time_window;
     :long_name = "observation time window";
     :units = "seconds";
   char stn_id(rec_num=0, stn_id_len=8);
     :long_name = "Station ID";
     :reference = "station id";
   double latitude(rec_num=0);
     :long_name = "Latitude";
     :standard_name = "latitude";
     :units = "degrees_north";
   double longitude(rec_num=0);
     :long_name = "Longitude";
     :standard_name = "longitude";
     :units = "degrees_east";
   float Turbine_Available(rec_num=0);
     :long_name = "Turbine Availabile";
     :_FillValue = -9999.0f; // float
     :coordinates = "obs_time latitude longitude";
   float Turbine_Generation(rec_num=0);
     :long_name = "Turbine Generation";
     :units = "kw/h";
     :_FillValue = -9999.0f; // float
     :coordinates = "obs_time latitude longitude";
   float Turbine_Generator_Online(rec_num=0);
     :long_name = "Turbine Generator Online";
     :_FillValue = -9999.0f; // float
     :coordinates = "obs_time latitude longitude";
   float Turbine_RotorRPM(rec_num=0);
     :long_name = "Turbine Rotor RPM";
     :units = "rpm";
     :_FillValue = -9999.0f; // float
     :coordinates = "obs_time latitude longitude";
   float Turbine_Nacelle_Position(rec_num=0);
     :long_name = "Nacelle Position";
     :units = "degrees";
     :_FillValue = -9999.0f; // float
     :coordinates = "obs_time latitude longitude";
   float Turbine_Nacelle_Wind_Speed(rec_num=0);
     :long_name = "Nacelle Wind Speed";
     :units = "m/s";
     :_FillValue = -9999.0f; // float
     :coordinates = "obs_time latitude longitude";

 :title = "Xcel Turbine Data";
 :version = 1.0; // double
 :Conventions = "CF-1.4";
 :featureType = "point";
 :description = "Observations made from Xcel wind farms, acquired through PI 
interface";
 :station_id = "stn_id";
 :observationDimension = "rec_num";
 :notes = "";
}


Ticket Details
===================
Ticket ID: REC-257012
Department: Support netCDF Java
Priority: Normal
Status: Open