John -
Not sure if Variable.findAttribute does a trim() or not on incoming
attribute names,
but if not, the extra space in "inverse_flattening " is definitely a bug
that should be
fixed. Even if benign, it should probably be changed. Full class
included below so
you can see what I mean - it's a very short file...
/*
* Copyright 1998-2009 University Corporation for Atmospheric
Research/Unidata
*
* Portions of this software were developed by the Unidata Program at the
* University Corporation for Atmospheric Research.
*
* Access and use of this software shall impose the following obligations
* and understandings on the user. The user is granted the right, without
* any fee or cost, to use, copy, modify, alter, enhance and distribute
* this software, and any derivative works thereof, and its supporting
* documentation for any purpose whatsoever, provided that this entire
* notice appears in all copies of the software, derivative works and
* supporting documentation. Further, UCAR requests that the user credit
* UCAR/Unidata in any publications that result from the use of this
* software or in any product that includes this software. The names UCAR
* and/or Unidata, however, may not be used in any advertising or publicity
* to endorse or promote any products or commercial entity unless specific
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* understands that UCAR/Unidata is not obligated to provide the user with
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* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE ACCESS, USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package ucar.nc2.dataset.transform;
import ucar.nc2.dataset.CoordinateTransform;
import ucar.nc2.dataset.ProjectionCT;
import ucar.nc2.dataset.TransformType;
import ucar.nc2.dataset.NetcdfDataset;
import ucar.nc2.Variable;
import ucar.nc2.Attribute;
import ucar.unidata.geoloc.projection.UtmProjection;
/**
* Create a UTM Projection from the information in the Coordinate
Transform Variable.
* *
* @author caron
*/
public class UTM extends AbstractCoordTransBuilder {
public String getTransformName() {
return "UTM";
}
public TransformType getTransformType() {
return TransformType.Projection;
}
public CoordinateTransform makeCoordinateTransform(NetcdfDataset ds,
Variable ctv) {
int zone = (int) readAttributeDouble( ctv, "utm_zone_number",
Double.NaN);
boolean isNorth = zone > 0;
zone = Math.abs(zone);
Attribute a;
double axis = 0.0, f = 0.0;
if (null != (a = ctv.findAttribute( "semimajor_axis")))
axis = a.getNumericValue().doubleValue();
if (null != (a = ctv.findAttribute( "inverse_flattening ")))
f = a.getNumericValue().doubleValue();
// double a, double f, int zone, boolean isNorth
UtmProjection proj = (axis != 0.0) ? new UtmProjection(axis, f,
zone, isNorth) : new UtmProjection(zone, isNorth);
return new ProjectionCT(ctv.getShortName(), "FGDC", proj);
}
}
--
Tommy Jasmin
Space Science and Engineering Center
University of Wisconsin, Madison
1225 West Dayton Street, Madison, WI 53706
