Introduction to GDAL

3. Reprojecting GIS data

3.2. Reprojecting vector data

For vector data the ogr2ogr command is used. The syntax is:

ogr2ogr -t_srs EPSG:XXXXX <output> <input>

Note that <output> and <input> are in a different order than for gdalwarp!

Here we'll convert the OpenStreetMaps road data to the Amersfoort/RD New projection.

1. Execute:
ogr2ogr -t_srs EPSG:28992 roadsreprojected.shp roads.shp

The command is executed (it takes some time), but gives a warning.

2. What does the warning mean?

More information about the ogr2ogr command can be found here.