Hi Bruce, Hmmm... GeoTools uses SPI to load up a number of pluggable components. The EPSG lookup bits are part of that (you only need one of the the HSQL or WKT jars; one quick option would be to try subbing in the WKT one!). There is also a CoordinateOperationFactory interface.
I don't have a complete or quick answer; my guess is that different implementations are being loaded in the two different environments. If you can step through both executions in a debugger, you might notice if you are seeing different implementations for the classes which are producing the transforms. Failing that, maybe someone else has run into this issue before? Cheers, Jim On 01/05/2017 05:04 PM, Bruce Ikelheimer wrote: > Jim, > > Thanks for getting back to me! I did include gt-epsg-hsql, but not > gt-epsg-wkt in my MAVEN pom, and I'm using version 16.0. And I did not set > up GeoServer - that part frightens me! > CRS is clearly working from the correct EPSG codes - it just all > changes when it goes to compute the MathTransform. When a project is built > as a Java application it all works, but when a project is built for a > server it produces a different (and incorrect) MathTansform. All built > with Eclipse... > > Bruce > > -----Original Message----- > From: Jim Hughes [mailto:jn...@ccri.com] > Sent: Thursday, January 5, 2017 4:37 PM > To: geotools-gt2-users@lists.sourceforge.net > Subject: Re: [Geotools-gt2-users] MathTransform changes on app type > > Hi Bruce, > > Great question. I believe CRS.decode calls out to the classes which > lookup the EPSG codes. Are you including gt-epsg-wkt or gt-epsg-hsql in > the projects? Also, which version of GeoTools are you using? Lastly, is > the server running GeoServer? > > Cheers, > > Jim > > On 01/05/2017 01:35 PM, bikelheimer wrote: >> Happy New Year to all! I've got a frustrating problem. I've created a >> Java application that reads in data from a GeoTiff and then finds >> points on that GeoTiff by converting a Lat/Long coordinate into the >> local coordinates in the GeoTiff. This is accomplished by reading the >> CRS from the GeoTiff and building a MathTransform between that and >> Lat/Long using the following >> lines: >> >> //Get the native coordinate system from the GeoTiff file >> this.CRSin = reader.getCoordinateReferenceSystem(); >> >> //This is the standard WGS 84 CRS >> CoordinateReferenceSystem latlongCRS = CRS.decode("EPSG:4326 >> "); //WGS 84 Lat/Long >> >> //Create the transform from the GeoTiff CRS to Lat/Long >> this.LatLong2tif = CRS.findMathTransform(latlongCRS, >> this.CRSin, true); >> >> I have managed to convert my local java app into a server based app. >> 99% of the code is exactly the same, including all aspects of dealing >> with the coordinate transform. However, when the code runs on the >> server, it chooses a different (and clearly incorrect) MathTransform. >> I've tried to debug this all the way down to the CRS class, but I >> can't figure out why it should do something different. >> >> Both versions correctly identify both CRSs and pass along the exact >> same inputs to find the MathTransform, but they produce different >> results. Has anyone seen this problem? >> >> >> >> >> -- >> View this message in context: >> http://osgeo-org.1560.x6.nabble.com/MathTransform-changes-on-app-type- >> tp5302177.html Sent from the geotools-gt2-users mailing list archive >> at Nabble.com. >> >> ---------------------------------------------------------------------- >> -------- Check out the vibrant tech community on one of the world's >> most engaging tech sites, SlashDot.org! http://sdm.link/slashdot >> _______________________________________________ >> GeoTools-GT2-Users mailing list >> GeoTools-GT2-Users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users > > > -------------------------------------------------------------------------- > ---- > Check out the vibrant tech community on one of the world's most engaging > tech sites, SlashDot.org! http://sdm.link/slashdot > _______________________________________________ > GeoTools-GT2-Users mailing list > GeoTools-GT2-Users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ GeoTools-GT2-Users mailing list GeoTools-GT2-Users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
