Yuan,
The sample you supplied is very close to what I started with, which came
from a post you made in September of 2004. The problem is that call to
GeotiffWriter seems to be short an argument. I looked at the source
code for GeotiffWriter, and it seems to me (again, I'm a Java newbie)
that this form of call to GeotiffWriter needs one more argument after
the boolean, and that argument gets passed to "LatLonRect", and that is
where I am currently stuck.
I tried passing 'null' as the argument, thinking that would cause
LatLonRect to return a rectangle covering the entire earth, but I got a
NullPointerException. I'm attaching the latest incarnation of my code.
BTW, where is there documentation for GeotiffWriter? I don't see any on
the netcdf-java documentation site.
Matt
Yuan Ho wrote:
John Caron wrote:
-------- Original Message --------
Subject: Problem using GeotiffWriter
Date: Wed, 14 Sep 2005 09:23:19 -0500
From: Matt Foster <Matthew.Foster@xxxxxxxx>
Organization: UCAR/Unidata
To: netcdf-java@xxxxxxxxxxxxxxxx
I'm a serious Java newbie, so be gentle if I've done something stupid
here...
I wrote the attached short program, which is based off of a post to
this list last year, to read a single element from a netCDF file, and
write a GeoTIFF file, however, I get the following error message when
I try to compile it with javac...
GeoTifWriter.java:16: cannot resolve symbol
symbol : method writeGrid
(java.lang.String,java.lang.String,int,int,boolean)
location: class ucar.nc2.geotiff.GeotiffWriter
writer.writeGrid("/home/mwfoster/MaxT_test.cdf", "MaxT_SFC", 0,
0, false);
^
The "caret" symbol is actually under the dot between writer and
writeGrid, in case a variable-width font messed that up.
Can someone help me out here?
Matthew,
Here is a small example of using GeotiffWriter class:
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("2003091116_ruc2.nc", "P_sfc", 0, 0, false);
writer.close();
}
If this does not work for you, email me your java code.
Yuan
Matt
--
"Those who would sacrifice essential liberties for a little
temporary safety deserve neither liberty nor safety."
-- Benjamin Franklin
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.*;
class NetcdfToGeotif {
public static void main(String args[]) throws IOException {
String fileOut = "/home/mwfoster/netCDF/maxT_test.tiff";
GeotiffWriter writer = new GeotiffWriter(fileOut);
writer.writeGrid("/home/mwfoster/MaxT_test.cdf", "MaxT_SFC", 0, 0, false,
null);
writer.close();
}
}
