Re: [Fwd: Problem using GeotiffWriter]

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 <address@hidden>
> > Organization:     UCAR/Unidata
> > To:     address@hidden
> >
> >
> >
> > 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();
   }
}