<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;">Dear list,<br><br>I have incidentally found these two nice things that might interest the gvSIG community:<br><br>(1) A huge shapefile with all the municipalities of France (+30,000 polygons), and their names and population. Very accurate, a vertex every few meters. About 7 million edges in one SHP file:<br><br><a href="http://sandre.eaufrance.fr/ftp/incoming/ONEMA/ADCO_France/">http://sandre.eaufrance.fr/ftp/incoming/ONEMA/ADCO_France/</a><br><br>(EPSG:2154, I think)<br><br>(2) NTv2 grid files to transform from/to the OSGB36 and ETRS89 datums (United Kingdom):<br><br><a href="http://lists.maptools.org/pipermail/proj/2006-November/002658.html">http://lists.maptools.org/pipermail/proj/2006-November/002658.html</a><br><br>I'm almost sure those grids have been derived by intensively querying Ordnance Survey's conversion service:<br><br><a
href="http://gps.ordnancesurvey.co.uk/etrs89geo_natgrid.asp">http://gps.ordnancesurvey.co.uk/etrs89geo_natgrid.asp</a><br><br>Have not tested, but I also believe that the accuracy of that grid is not significantly worse than that of the web service itself, so that gives you an error below 10 cm (if I understood it well) for the whole country.<br><br>Regards,<br><br>Juan Lucas Domínguez Rubio<br><a rel="nofollow" target="_blank" href="http://gvsigmobileonopenmoko.wordpress.com">http://gvsigmobileonopenmoko.wordpress.com</a><br><a rel="nofollow" target="_blank" href="http://tellusproject.blogspot.com">http://tellusproject.blogspot.com</a><br><a href="http://foss4gis.blogspot.com">http://foss4gis.blogspot.com</a><br></td></tr></table><br>