Re: [idvusers] API for vertical section plots

• To: idvusers@xxxxxxxxxxxxxxxx
• Subject: Re: [idvusers] API for vertical section plots
• From: Don Murray <Don.Murray@xxxxxxxx>
• Date: Wed, 19 Jan 2011 08:16:17 -0700

Jon-

If you need more help, contact me directly.

Don

On 1/17/11 2:13 PM, Jon Blower wrote:

Dear IDV folk,

I've seen that IDV can produce vertical section plots.  I'm interested in 
re-using this capability in other software (ncWMS) if possible.  I'd like to 
produce a plot as a standalone image (i.e. outside the context of Swing or any 
particular desktop), ideally as a BufferedImage.  Could someone please point me 
to the relevant bit in the libraries please?

Thanks,
Jon
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--
Don Murray
NOAA/ESRL/PSD and CIRES
303-497-3596
http://www.esrl.noaa.gov/psd/people/don.murray/

import ucar.unidata.data.grid.GeoGridAdapter;
import ucar.unidata.data.grid.GeoGridDataSource;
import ucar.unidata.data.grid.GridUtil;
import ucar.nc2.dt.grid.*;
import visad.*;
import visad.georef.LatLonTuple;


public class TestSlice {

    public static void main(String[] args) throws Exception {
        if (args.length == 0) {
           System.out.println("Must supply at least a filename");
           System.out.println("Usage:  java TestSlice <filename> <parameter>");
           System.exit(1);
        }
        String file = args[0];
        GridDataset gds = GridDataset.open(file);
        GeoGridDataSource ggds = new GeoGridDataSource(null, gds, "my data", 
file);
        String paramName = "T";
        if (args.length > 1) {
            paramName = args[1];
        }
        GeoGrid geoGrid       = gds.findGridByName(paramName);
        if (geoGrid == null) {
           System.out.println("Can't find grid named " + paramName);
           System.exit(1);
        }
        GeoGridAdapter gga = new GeoGridAdapter(ggds, geoGrid);
        FieldImpl fi = gga.getSequence();
        System.out.println(fi.getType());
        FieldImpl slice = GridUtil.sliceAlongLatLonLine(fi, new 
LatLonTuple(40,-120), new LatLonTuple(30,-70));
        System.out.println(slice);
    }
}

• References:
  • [idvusers] API for vertical section plots
    • From: Jon Blower