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Re: [Geotools-gt2-users] Problems reading huge rasters
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From: César M. I. <ces...@gm...> - 2009-10-02 08:58:33
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Hello Christian, and thanks for your quick reply. I'm writing an application which should be able to deal with such big data (either in GRID or in TIFF). I know that there are tools like gdal which are able to build tiles and so on, but I need my application (written in Java) to be able to deal with the whole file. Of course, I do not try to load it in memory, but I wish to read it to make some geo-processing. Regards, César 2009/10/2 Christian Müller <chr...@nv...>: > What do you want to do with this large image in memory ? > I never worded with ArgGrid rasters but I would suggest you download > http://fwtools.maptools.org/ > and use gdal_retile.py to build tiles and pyramids. Afterwards you can use > the geotools imagemosaic mdoule to process the tiles from the file system or > imagemosaic-jdbc to do the same having the tiles in a jdbc database. > > > > César Martínez Izquierdo writes: >> >> I need to process huge rasters with GeoTools, but it seems I've found >> its limit :-( >> INFO: Unable to find crs, continuing with default WGS4 CRS >> Exception in thread "main" java.lang.IllegalArgumentException: >> Dimensions (width=59000 height=46000) are too large >> at java.awt.image.SampleModel.<init>(SampleModel.java:112) >> at >> java.awt.image.ComponentSampleModel.<init>(ComponentSampleModel.java:128) >> at >> javax.media.jai.ComponentSampleModelJAI.<init>(ComponentSampleModelJAI.java:73) >> at >> javax.media.jai.FloatDoubleColorModel.createCompatibleSampleModel(FloatDoubleColorModel.java:1003) >> at >> it.geosolutions.imageio.plugins.arcgrid.AsciiGridsImageReader.initializeReader(AsciiGridsImageReader.java:344) >> at >> it.geosolutions.imageio.plugins.arcgrid.AsciiGridsImageReader.setInput(AsciiGridsImageReader.java:320) >> at >> org.geotools.gce.arcgrid.ArcGridReader.<init>(ArcGridReader.java:184) >> at >> org.geotools.gce.arcgrid.ArcGridFormat.getReader(ArcGridFormat.java:157) >> at >> org.geotools.gce.arcgrid.ArcGridFormat.getReader(ArcGridFormat.java:106) >> at etclusi.tests.gt.TestArcGrid.main(TestArcGrid.java:24) >> >> The relevant code follows: >> File file = new File("d:\\bigtab\\mosaic.asc"); >> ArcGridFormat agf = new ArcGridFormat(); >> GridCoverageReader reader = agf.getReader(file); >> Have you found a similar problem? Is there any workaround? >> I see it is a problem with JAI... is there any chance to replace the >> "limited" classes with another non-JAIs classes? >> Regards, >> César Martínez Izquierdo >> -- >> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - >> César Martínez Izquierdo >> GIS developer >> - - - - - - - - - - - - - - - - - - - - >> ETC-LUSI: http://etc-lusi.eionet.europa.eu/ >> Universitat Autònoma de Barcelona (SPAIN) >> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - >> >> ------------------------------------------------------------------------------ >> Come build with us! The BlackBerry® Developer Conference in SF, CA >> is the only developer event you need to attend this year. Jumpstart your >> developing skills, take BlackBerry mobile applications to market and stay >> ahead of the curve. Join us from November 9-12, 2009. Register now! >> http://p.sf.net/sfu/devconf >> _______________________________________________ >> Geotools-gt2-users mailing list >> Geo...@li... >> https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users > > > -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - César Martínez Izquierdo GIS developer - - - - - - - - - - - - - - - - - - - - ETC-LUSI: http://etc-lusi.eionet.europa.eu/ Universitat Autònoma de Barcelona (SPAIN) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
