Ciao Spenser, I would open a JIRA linking the relevant files. It should be ftraightforward as as Fix.
Regards, Simone Giannecchini == Our support, Your Success! Visit http://opensdi.geo-solutions.it for more information. == Ing. Simone Giannecchini @simogeo Founder/Director GeoSolutions S.A.S. Via Poggio alle Viti 1187 55054 Massarosa (LU) Italy phone: +39 0584 962313 fax: +39 0584 1660272 mob: +39 333 8128928 http://www.geo-solutions.it http://twitter.com/geosolutions_it ------------------------------------------------------- On Fri, Sep 6, 2013 at 12:35 AM, Spencer Bliven <[email protected]> wrote: > I am reading SRMT+ data using the GTopo30Reader. The 9.5 version works > great, but 10-RC2 gives incorrect values for coordinates in the middle of > the grid. This looks like a problem with how tiles are set up in the > underlying GridCoverage, but I'm not sure what initialization parameters are > set wrong, and whether this is a problem with how the GTopo30Reader sets up > the GridCoverage2D or whether the error spans all GridCoverage2D instances. > > Specific steps to reproduce: > > I am loading the SMTP+ elevation data from > ftp://topex.ucsd.edu/pub/srtm30_plus/srtm30/erm/w140n40.Bathymetry.srtm.dem > (with associated ers,hdr,prj, and stx files) with the code > > GTopo30Reader reader = new GTopo30Reader( demFile ); > GridCoverage2D coverage = reader.read(null); > > This is a large 4800x6000 cell dataset. The returned coverage is broken up > into 480x500 pixel tiles internally (see GridCoverage2D#evaluate(final > GridCoordinates2D coord, final int[] dest) > > In 10-RC2 these tiles are not drawing data from their 480x500 pixel subset > of the file, but rather from a 4800x50 pixel subset. Thus, only the first > and last 480 pixels return the correct elevation. > > For this specific file, the following test passes in 9.5 and fails in 10-RC* > > pos = new GridCoordinates2D(480,0); > assertEquals(-4337,coverage.evaluate(pos,(int[])null)[0]); > > I'll be happy to provide the auxiliary files I'm working with if they're > needed to reproduce the bug. > > -Spencer > > ------------------------------------------------------------------------------ > Learn the latest--Visual Studio 2012, SharePoint 2013, SQL 2012, more! > Discover the easy way to master current and previous Microsoft technologies > and advance your career. Get an incredible 1,500+ hours of step-by-step > tutorial videos with LearnDevNow. Subscribe today and save! > http://pubads.g.doubleclick.net/gampad/clk?id=58041391&iu=/4140/ostg.clktrk > _______________________________________________ > GeoTools-GT2-Users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users > ------------------------------------------------------------------------------ Learn the latest--Visual Studio 2012, SharePoint 2013, SQL 2012, more! Discover the easy way to master current and previous Microsoft technologies and advance your career. Get an incredible 1,500+ hours of step-by-step tutorial videos with LearnDevNow. Subscribe today and save! http://pubads.g.doubleclick.net/gampad/clk?id=58041391&iu=/4140/ostg.clktrk _______________________________________________ GeoTools-GT2-Users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
