Due to the current gap in continued funding from the U.S. National Science Foundation (NSF), the NSF Unidata Program Center has temporarily paused most operations. See NSF Unidata Pause in Most Operations for details.
Due to the current gap in continued funding from the U.S. National Science Foundation (NSF), the NSF Unidata Program Center has temporarily paused most operations. See NSF Unidata Pause in Most Operations for details.
To: support-netcdf-java@xxxxxxxxxxxxxxxx From: "andrew fox" <andrew.m.fox@xxxxxxxxxxxxxx>Subject: netCDF Java - How do I export a single variable to a GeoTiff file?Organization: USDA Keywords: 200408272156.i7RLuqsB013099Institution: U.S.D.A APHIS Package Version: UI Webstart version Operating System: Win XP ProHardware 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=5ecf7c4c34abe333603544ecc312610dI 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 support@xxxxxxxxxxxxxxxx
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