For the benefit of everyone, here is the answer. So GeoTools (tested with version 10) will not automatically use the grid file, even if the file is named correctly and is available in the classpath. A new custom AuthorityFactory must be added to override the transformation (already defined in the EPSG database).
See Oscar Fonts project: https://github.com/oscarfonts/geocalc/ This may not be necessary if the transformation is not already defined in the EPSG database. Thanks to Oscar Fonts for the answer. Christian On Thu, Nov 21, 2013 at 8:53 AM, Christian Gendreau <[email protected]> wrote: > Hi everyone, > > I would like to transform some coordinates in EPSG:2033 (NAD27(CGQ77) > / UTM zone 19N) into WSG84. > There is no Bursa Wolf parameters available in EPSG:2033 > (http://spatialreference.org/ref/epsg/2033/). > > I can do it with a lenient transformation, but it is possible to > achieve that with a Grid Shift File? > I guess the Canadian NTv2 file since the area of this CRS is Canada - Quebec. > > Maybe there is other alternatives? > > > Thanks, > > Christian Gendreau -- Christian Gendreau ing. jr Ingénieur logiciel / Software Engineer Canadensys - www.canadensys.net Université de Montréal, Centre sur la biodiversité / Biodiversity Centre 4101 rue Sherbrooke est Montreal, QC, H1X 2B2 Canada 514-343-6111 ext. 83146 Email: [email protected] ------------------------------------------------------------------------------ Sponsored by Intel(R) XDK Develop, test and display web and hybrid apps with a single code base. Download it for free now! http://pubads.g.doubleclick.net/gampad/clk?id=111408631&iu=/4140/ostg.clktrk _______________________________________________ GeoTools-GT2-Users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
