Michael Bedward wrote:
>
>
> Here's one last suggestion, after which I'm afraid that my feeble
> knowledge of JAI is used up...
>
> RenderedImage rImg = cov.getRenderedImage();
> TiledImage tImg = new TiledImage(rImg, true);
> WritableRectIter iter = RectIterFactory.createWritable(tImg, null);
> float c = (float)100;
> do {
> do {
> iter.setSample(c);
> } while (!iter.nextPixelDone());
> iter.startPixels();
> } while (!iter.nextLineDone());
>
>
>
In this way it is possible to write data into GridCiverage and read it, but
it is not possible to write changes to file. It works only with -Xmx1024m
otherwise it can not create DataBuffer while trying to execute
iter.nextLineDone().
However I can live with that.
By the way this solution:
Michael Bedward wrote:
>
> RenderedImage rImg = cov.getRenderedImage();
> TiledImage tImg = new TiledImage(rImg, true);
> WritableRectIter iter = RectIterFactory.createWritable(tImg, null);
> float c = (float)100;
> for (int y = tImg.getMinY(); y <= tImg.getMaxY(); y++) {
> for (int x = tImg.getMinX(); x <= tImg.getMaxX(); x++) {
> iter.setSample(c);
> }
> iter.nextLine();
> iter.startPixels();
> }
>
works with WritableRandomIter.
Thanks a lot for your help
Oleg
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