[gdal-dev] ogr2ogr reprojection, features are not transformed
etourigny.dev at gmail.com
Tue Nov 15 17:25:49 EST 2011
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.
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