From: G. A. <gio...@gm...> - 2011-10-29 11:33:53
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Hi Michael, thanks for you reply. I'm reading a lot of documentation to grasp the undergrounds of JAI & friends, and I've reached my real doubt. I have to do some calculations (map algebra foundamentally, bot not only this) on big raster thta don't fit in memory. I'm trying to figure out the best pattern to streamline read->process->write. I've read that JAI operation chaining can automatically manage this if the source is a tiled Tiff (is it right?), but I need to manage this process in the context of Geotools, because I need to deal with geographical rasters. So, what I'm looking for are utilities that can help to manage tile based (or any other kind of block) reading, processing and writing. I will go on trying, lost between OOM crashes :) giovanni 2011/10/29 Michael Bedward <mic...@gm...> > Hello Giovanni, > > I just had a quick look through the docs code snippets and examples > and I don't think there is anything that features jaitools classes. > Looking at the list archives, the last message I found relating to > DiskMemImage was back in 2009. So unless Andrea or Simone can suggest > something, I'm afraid there aren't any existing examples to direct you > to - sorry about that. > > That said, DiskMemImage is just another PlanarImage class, and the > DiskMemTileCache class which it uses to swap tiles to disk has a > pretty simple API. If there are particular questions you have about > those classes I might be able to help. > > Michael > > > On 29 October 2011 06:22, G. Allegri <gio...@gm...> wrote: > > I know it Andrea, but I also see that here and there it has been > > incorporated in some Geotools module. I simply wondered if its image > > utilities (like DiskMemImage) could be used within the Geotools context. > > Having read something more I suppose yes, as it is an extension of the > JAI > > PlanarImage. > > If you know of examples of its use with Geotools I would be grateful if > you > > could point me there ;) > > giovanni > > > |