Hi all,
I¹ve successfully created an empty NetcdfFile but I¹m having some difficulty
writing data to the file. Just for a bit of context, I¹m trying to write
data from a list of particles each of which has an id, lat, lon and
concentration to the nc file one timestep at a time.
In other words, I have a loop where a new list of particles is generated
each cycle. After they are generated, they need to be written to the nc
file as a ³new² timestep.
Basically, I¹d like to have a method that accepts the list of particles
(which contain lat, lon, conc) and a time and simply write a new time record
with all of the particles in the list. Is that possible??
I¹m completely lost as to how I can do this efficiently. All of the
examples I can find show writing all of the variables for all times at once
which doesn¹t help (too much data to hold in memory until the end).
Any help is very much appreciated.
Thanks,
Chris
Here¹s my file creation code just in case there¹s something wrong here...:
outNc = NetcdfFileWriteable.createNew(fileLoc, true);
//make the dimensions
Dimension timeDim = outNc.addDimension(this.TIME, timeSteps);
Dimension partDim = outNc.addDimension(this.PARTICLE, numParts);
ArrayList dims = new ArrayList();
//add coordinate variables
outNc.addVariable(this.TIME, DataType.INT, new
Dimension[]{timeDim});
outNc.addVariable(this.PARTICLE, DataType.INT, new
Dimension[]{partDim});
dims.add(timeDim);
dims.add(partDim);
//add the variables
outNc.addVariable(this.LAT, DataType.DOUBLE, dims);
outNc.addVariable(this.LON, DataType.DOUBLE, dims);
outNc.addVariable(this.CCONC, DataType.DOUBLE, dims);
//add attributes to the variables
outNc.addVariableAttribute(this.LAT, "units", "deg North");
outNc.addVariableAttribute(this.LON, "units", "deg East");
outNc.addVariableAttribute(this.CCONC, "units", "moles liter^-1");
try {
outNc.create();
} catch (IOException ex) {
ex.printStackTrace();
}
