Hi, I'm using QGIS to export shapefiles from WGS84 GCS to a local projected coordinate system so that I can import the projected shapefile into GRASS.
The PROJ4 definition that I use to export the shapefile (and that I used to create the GRASS location) is: +proj=tmerc +lat_0=0 +lon_0=29 +k=1 +x_0=0 +y_0=0 +ellps=WGS84 +units=m +no_defs When I use v.in.ogr to get the shapfile into GRASS, I get the message: 'Datum <unknown> not recognised by GRASS and no parameters found Projection of input dataset and current location appear to match' Should I worry about the first part of the message? The imported vector data does look a bit skew. It consists of rectangles that should match raster DEM rectangles, but the outlines now seem to be leaning a few degrees towards the left. Is this just a result of the errors inherent in a projected coordinate system? Thanks Hanlie _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
