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Hi all,i recently have started to looking into reading grib1 and grib2 files using the netcdf java library and need to extract the variables in the file along with their relative data. i have some code here:
public class GribPlugin { GribChecker file = new GribChecker(); Grib1GridDefinitionSection gridSection; Grib1Input gribInput; Grib1ProductDefinitionSection productSection; Grib2ExtractRawData extract; ArrayList<String> gribRecords; ArrayList<String> gribProducts; String testfile = "Pacific.wind.grb"; static int type;public GribPlugin() throws IOException, NoValidGribException, NotSupportedException{
ucar.unidata.io.RandomAccessFile gribfile = new ucar.unidata.io.RandomAccessFile(testfile, "rw");
type = file.getEdition(gribfile);System.out.println("File read in: " + testfile + ", Type of Grib File is " + type);
gribInput = new Grib1Input(gribfile); gribRecords = new ArrayList<String>(); gribProducts = new ArrayList<String>(); gribRecords = gribInput.getRecords(); gribProducts = gribInput.getProducts(); //extract = new Grib2ExtractRawData(gribfile); //gribRecords = extract.getRecords(); //gribProducts = extract.getProducts(); System.out.println("number of grib records: " + gribRecords.size()); System.out.println("number of grib products: " + gribProducts.size()); //System.out.println(gridSection.getNx() + " " + gridSection.getNy());//System.out.println("First lat coordinate: " + gridSection.getLa1() + " Last lat coordinate: " + gridSection.getLa2()); //System.out.println("First lon coordinate: " + gridSection.getLo1() + " Last lon coordinate: " + gridSection.getLo2());
} a printout of this code with this particular file yields: File read in: Pacific.wind.grb, Type of Grib File is 1 number of grib records: 0 number of grib products: 0I guess i don't know what i am looking for to get the data and am not as familiar with this type of data as i should be. I guess i need to read up on what "records" or "products" really are but i was wondering if there was any examples hidden somewhere in some javadoc from the netcdf java website??
thanks all for the help and suggestions! Chad
netcdf-java
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