[Geotools-gt2-users] Resize a GridCoverage Object

[S D. <sd...@ja...>]

I am trying to Scale a Grid Coverage and it seems like the 'Scale' Operation
doesn't work the way I thought it would.  The new GridCoverage Object is the
exact same size as the GridCoverage object before we do the operation.  Here
is my source code to simply scale an image 1.5 times in both the X and Y
direction:

final AbstractProcessor processor = new DefaultProcessor(null);
final ParameterValueGroup param =
processor.getOperation("Scale").getParameters();
param.parameter("source").setValue(originalGridCoverage);   //a
GridCoverage2D object
param.parameter("xTrans").setValue(0.0D);
param.parameter("yTrans").setValue(0.0D);
param.parameter("xScale").setValue(1.5D);
param.parameter("yScale").setValue(1.5D);
movedImage = (GridCoverage2D) processor.doOperation(param);  //the
movedImage object is a GridCoverage2D object.

In the end, the movedImage object has the exact same dimensions as the
originalGridCoverage object.  Also, nothing resizes on my map like I'd
expect.  I was able to perform translations just fine by setting the x and
yTrans variables, it is the scaling that has be stumped.  Any suggestions on
what I may be doing wrong?

Thanks in advance!

Spencer



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