HI Mariusz,
The OMGrid object ties it all together. The GridData object and
SlopeGenerator should be part of the OMGrid object, and when you call
OMGrid.generate(proj), the OMGrid will contain the OMRaster (the
OMGrid is an OMGraphicList). I think the OMGrid object has information
the SlopeGenerator needs in generate(...).
Hope this helps,
- Don
On Nov 29, 2007, at 6:00 AM, Mariusz Chmielewski wrote:
> I have an urgent question about generating an DTED like raster
> image. I have prepared a data in text form based on the work in NEST
> project shown on the OpenMap website. The data is teh depth map of
> Baltic see. So far I have managed to write a cache object for
> reading my data and layer showing a depth of the selected point in
> Gesture mode. The problem is that I also want to generate a raster
> image of the depth grid.
>
> public OMRaster getSeeMapFrame(Projection proj) throws
> RemoteException {
> OMRaster result = null;
> if ((proj != null) && (proj instanceof EqualArc)) {
> dataGrid.generate(proj);
> SlopeGenerator sg = new SlopeGenerator();
> result = sg.generateRasterForProjection(dataGrid, proj);
> }
> return result;
> }
>
> this is my server's method for creating a Raster based on the
> current projection. I check it in the debugger .. the raster is
> null.. What is the problem ? Perhaps I cannot understand the concept
> of the Data Grid object.
>
>
> Any opinions?
>
> --
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=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Don Dietrick, dietrick_at_bbn.com
BBN Technologies, Cambridge MA
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Received on Thu Nov 29 2007 - 08:00:29 EST