Thanks for joining on the developer list to look into this issue, given that the bug is still open if someone already solved this problem they did not share the solution with the geotools project.
JAI provides the image processing API, JAI-EXT extends this with operations that are better suited for GIS data (respecting things like nodata in your example). ImageIO is an image format library, with ImageIO-EXT providing access to additional GIS image formats such as GeoTIFF. Ideas: - Double check you called the appropriate JAIExt.initJAIEXT(); method to set everything up? As per tutorial <https://docs.geotools.org/latest/userguide/tutorial/raster/jaiext.html>. - If you use the swing tutorial can you access the same image file? I would like to confirm that this is a specific failure to SWT (rather than an issue with the test image you are using). - Please step through the debugger with the normal swing app to see how ImageWorker expects to operate, compare how this operates when used in your SWT operation The uDig program (which uses SWT) has recently upgraded their version of GeoTools so what you are trying should work. -- Jody Garnett On Fri, 3 Jul 2020 at 07:38, Jonas Schrottenbaum via GeoTools-Devel < geotools-devel@lists.sourceforge.net> wrote: > Hello, > > currently i'm working on my E4 RCP application with the GeoTools > repository completely cloned and in my workspace. So i'm using the most > recent version of the SWT module (24-snapshot, where no official release is > out as far as i know). And i ran into a bug that some others > apparently also had in the past. See here: > https://osgeo-org.atlassian.net/browse/GEOT-6277?attachmentOrder=asc and > https://sourceforge.net/p/geotools/mailman/message/36741424/ > > I can add the swtMapPane into a part. Loading shapefiles works fine > without problems. I also can load a WMS. But as soon as i toggle the > visibility in the layer view, or use the zoom extent option twice in a row, > i get the same error as in the links above. > > Did someone solve this problem already? Or is it still unknown, why it > happens? > > I'm aiming for a contribution later that year, for the swt module. Any > suggestions, what in this module causes the error, so i can have a look at > it and hopefully fix it? > > First thing i want to try is using JAI EXT (or should i use ImageIO EXT > instead?). Do i need to turn it on in my own code, or in the swt module > code? > Any other ideas where to look at and what to try? > > Thanks in advance, > Jones > _______________________________________________ > GeoTools-Devel mailing list > GeoTools-Devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/geotools-devel >
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