Example 2 as CDL file

[nmassey001]

netcdf {

  // Example 2
  // An aggregated data variable whose aggregated data comprises two fragments.
  // Each fragment spans half of the aggregated time dimension and the whole of
  // the other three aggregated dimensions. One fragment is stored in an
  // external file and the other is stored in the same dataset as variable
  // temp2. The fragment stored in the same dataset has different but
  // equivalent units to the aggregation variable, and omits the size 1 level
  // dimension.

  dimensions:
    // Aggregated dimensions
    time = 12 ;
    level = 1 ;
    latitude = 73 ;
    longitude = 144 ;
    // Fragment dimensions
    f_time = 2 ;
    f_level = 1 ;
    f_latitude = 1 ;
    f_longitude = 1 ;
    // Extra dimensions
    i = 4 ;
    j = 2 ;
  variables:
    // Data variable
    double temp ;
      temp:standard_name = "air_temperature" ;
      temp:units = "K" ;
      temp:cell_methods = "time: mean" ;
      temp:aggregated_dimensions = "time level latitude longitude" ;
      temp:aggregated_data = "location: aggregation_location
                              file: aggregation_file
                              format: aggregation_format
                              address: aggregation_address" ;
    // Coordinate variables
    double time(time) ;
      time:standard_name = "time" ;
      time:units = "days since 2001-01-01" ;
    double level(level) ;
      level:standard_name = "height_above_mean_sea_level" ;
      level:units = "m" ;
    double latitude(latitude) ;
      latitude:standard_name = "latitude" ;
      latitude:units = "degrees_north" ;
    double longitude(longitude) ;
      longitude:standard_name = "longitude" ;
      longitude:units = "degrees_east" ;
    // Aggregation definition variables
    int aggregation_location(i, j) ;
    string aggregation_file(f_time, f_level, f_latitude, f_longitude) ;
    string aggregation_format ;
    string aggregation_address(f_time, f_level, f_latitude, f_longitude) ;
    // Fragment variable
    double temp2(time, latitude, longitude) ;
      temp:units = "degreesC" ;

  // global attributes:
    :Conventions = "CF-1.9 CFA-0.6" ;
  data:
    temp = _ ;
    time = 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334 ;
    aggregation_location = 6, 6,
                           1, _,
                           73, _,
                           144, _ ;
    aggregation_file = "January-June.nc", _ ;
    aggregation_format = "nc" ;
    aggregation_address = "temp", "temp2" ;
    temp2 = 4.5, 3.0, 0.0, -2.6, -5.6, -10.2, _ ;
}