hey guys,
I still have some problems, can you help?
> GridEnvelope2D newGEnv = new GridEnvelope2D(0, 0, xDim, yDim);
why is it zero? and not curGridEnv.x/curGridEnv.y?
I have the following code snippet now:
// initialize new processor and parameters
crs = new CoordReferSyst();
DefaultProcessor processor = new DefaultProcessor(null);
ParameterValueGroup parameters =
processor.getOperation("Resample").getParameters();
parameters.parameter("Source").setValue(gc2D);
// interpolation can be NearestNeighbor, Bilinear or Bicubic
parameters.parameter("InterpolationType").setValue("NearestNeighbor");
// get current grid geometry, envelope and range
GridGeometry2D curGridGeom = gc2D.getGridGeometry();
Envelope2D curWorldEnv = curGridGeom.getEnvelope2D();
GridEnvelope2D curGridEnv = curGridGeom.getGridRange2D();
// cell size to fixed value
double cellSize = gridCellWidth;
int xDim = (int) (curWorldEnv.getWidth()/cellSize);
int yDim = (int) (curWorldEnv.getHeight()/cellSize);
GridEnvelope2D newGEnv = new GridEnvelope2D(curGridEnv.x,
curGridEnv.y,
xDim, yDim);
GridGeometry2D newGG = new GridGeometry2D(newGEnv,
(Envelope)curWorldEnv);
parameters.parameter("GridGeometry").setValue(newGG);
//parameters.parameter("CoordinateReferenceSystem").setValue(crs.crs_ETRS89_LAEA());
GridCoverage2D resampledCov = (GridCoverage2D)
processor.doOperation(parameters);
return resampledCov;
If the new cell width is larger than the old one everything is fine. but if
it is smaller, the values are not correct, I guess. If I change to cell
width from larger to finer, the values are not allowed to change. am I
right? for example at first I have 1000m cell width with one cell with value
3 and new cell width is 100m, than I have also the value 3 everywhere just
splitted into 10 pieces. right?
I have problems with the coordinate reference system. I think the code is
correct. isn't it?
--
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