http://anitagraser.com/2013/12/15/osm-quality-assessment-with-qgis-positional-accuracy/ -- Giovanni Manghi Faunalia.pt Sistemas de Informação Geográfica Open Source Portugal Web: http://www.faunalia.pt Email & Jabber: giovanni.manghi faunalia.pt PGP Key available Tel. + 351 96 7058216 --