Hi all, I am working with data in the SAD69 Datum (EPSG:4618) from Brazil's IBGE and when I convert any data to/from WGS84 (EPSG:4362) it appears that there is absolutely no shift in the coordinates.
I understand that they are similar datums, but one would expect a visible shift. The only changes are in the files are the .prj file which contain the SAD69 or WGS84 GEOGCS. I use the following command: $ ogr2ogr --debug on -t_srs EPSG:4326 LC_CIDADE_wgs84.shp LC_CIDADE.shp OGR: OGROpen(LC_CIDADE.shp/0x1384170) succeeded as ESRI Shapefile. OGRCT: Source: +proj=longlat +ellps=aust_SA +no_defs OGRCT: Target: +proj=longlat +datum=WGS84 +no_defs Shape: DBF Codepage = LDID/87 for LC_CIDADE_wgs84 Shape: Treating as encoding 'ISO-8859-1'. Shape: 5806 features read on layer 'LC_CIDADE'. I also tried the same command with an UTM projection, and again the only thing that changes is the .prj file. I have also tried it with other shapefiles, with the same result. Is this the expected behavior, or am I doing something wrong? I would expect the geometries to be transformed, but apparently they are not. thanks, Etienne _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
