Re: Read netcdf

You can look at the user manual at

 ftp://ftp.unidata.ucar.edu/pub/netcdf-java/v2.2/NetcdfJavaUserManual-2.2.doc

it has some examples in the appendices.

good luck!

address@hidden wrote:
> Hi John ,
>
> Thanks for your answer but I have some problems again. So if you can show me an
> example to read the data I join a netcdf file I want to read. The problem is
> that I want to create a plot in 3 Dimensions with these data so I have to put
> them into some tabs. I would like to create a program which works for all kind
> of netcdf files.
>
>
> This is the program I wrote .
>
> import java.rmi.RemoteException;
> import ucar.netcdf.Attribute;
> import ucar.netcdf.Netcdf;
> import ucar.netcdf.NetcdfFile;
> import ucar.netcdf.Variable;
> import visad.VisADException;
>
>
> public class Read {
>
>     static String fileName = "c:/output.nc";
>
>     public static void main(String[] args) throws RemoteException,
> VisADException{
>
>         if (args.length > 0)
>             fileName = args[0];
>
>         try {
>             Netcdf nc = new NetcdfFile(fileName, true);
>             Variable lat = nc.get("NBLATITUDES75_103");
>             int nlats = lat.getLengths()[0];
>             double [] lats = new double[nlats];
>             int[] index = new int[1];
>             for (int ilat = 0; ilat < nlats; ilat++) {
>                 index [0] = ilat;
>                 lats[ilat] = lat.getDouble(index);
>             }
>             String latUnits = lat.getAttribute("units").getStringValue();
>
>
>             Variable lon = nc.get("NBLONGITUDES231_281");
>             int nlons = lon.getLengths()[0];
>             double [] lons = new double[nlons];
>             int[] index1 = new int[1];
>             for (int ilon = 0; ilon < nlons; ilon++) {
>                 index1 [0] = ilon;
>                 lons[ilon] = lon.getDouble(index1);
>             }
>             String lonUnits = lon.getAttribute("units").getStringValue();
>
>
>
>             Variable rh = nc.get("GRID_0001");
>             String rhUnits = rh.getAttribute("units").getStringValue();
>             System.out.println("Units rh : " +rhUnits);
>             int[] rhShape = rh.getLengths();
>
>             double[][] rhData = new double[rhShape[0]][rhShape[1]];
>
>             int[] ix = new int[2];
>             for (int ilat = 0; ilat < rhData.length; ilat++) {
>                 ix[0] = ilat;
>                 for (int ilon = 0; ilon < rhData[0].length ; ilon++) {
>                     ix[1] = ilon;
>                         rhData[ilat][ilon] = rh.getInt(ix);
>
>
>                 }
>             }
>
>
>         } catch (java.io.IOException e) {
>             e.printStackTrace();
>         }
>
>     }
>
> }
>
> Thanks and Have a nice day