Re: [Fwd: 20040827: netCDF Java - How do I export a single variable to a GeoTiff file?]

> > To: address@hidden
> > From: "andrew fox" <address@hidden>
> > Subject: netCDF Java - How do I export a single variable to a GeoTiff 
> > file?
> > Organization: USDA
> > Keywords: 200408272156.i7RLuqsB013099
>
>
> Institution: U.S.D.A APHIS
> Package Version: UI Webstart version
> Operating System: Win XP Pro
> Hardware Information: Dell workstation: dual intel xeon 2.37 GHz 
> processor, 2 GB RAM
> Inquiry: I am trying to use the Java netstart netcdf UI tool 
> interface: 
> http://my.unidata.ucar.edu/content/software/netcdf-java/v2.1/webstart/index.html?unidata=5ecf7c4c34abe333603544ecc312610d 
>
>
> I have a netcdf file with about 50 variables in a matrix form 
> registered to a map grid.  I am trying to use the netcdf UI program to 
> export a single variable to a GeoTiff file.  I created a folder in: 
> C:\data\geotiff\test to hold output geotiff files and am able to 
> create a single geotiff file from the .nc file but I cannot figure out 
> how to export a single variable from the netcdf file to a geotiff 
> file?  Is it possible to export a single variable from a netcdf file 
> containing many variables to a geotiff file? 
> Thanks very much!
> Andrew Fox 


Andrew,
       The answer is yes and this is how geotiff api designed. Here is 
a example you can refernece (assuming that you already have netcdf-java 
packages):

import ucar.ma2.*;
import ucar.nc2.*;
import ucar.nc2.dataset.*;
import ucar.nc2.geotiff;
import ucar.nc2.dataset.grid.*;
import ucar.unidata.geoloc.*;
import ucar.unidata.geoloc.projection.*;

import java.io.*;
import java.util.*;


 public static void main(String args[]) throws IOException {
   String fileOut = "totalr1.tif";
    
   GeotiffWriter writer = new GeotiffWriter(fileOut);
  
    
   
writer.writeGrid("dods://www.cdc.noaa.gov/cgi-bin/nph-nc/Datasets/noaa.oisst.v2/sst.mnmean.nc", 
"sst", 0, 0,false);
  
   
//writer.writeGrid("/home/yuanho/dev/netcdf-java/geotiff/2003072918_avn-x.nc", 
"T", 0, 0, true, llr);
   writer.close();

 }

Let me know if you need further help.


Yuan
address@hidden

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