Hi,<br><br>I have a problem in QGIS 1.4.0 when I reproject a gpx file into Belgian lambert 72 coordinate system : the waypoints are not correctly placed on the map (see this image : <a href="http://www.fsagx.ac.be/gf/outilslogiciels/Garbel/proj4.jpg">http://www.fsagx.ac.be/gf/outilslogiciels/Garbel/proj4.jpg</a>). I already have a similar problem when writing a GPS software (<a href="http://lists.maptools.org/pipermail/proj/2006-August/002447.html">http://lists.maptools.org/pipermail/proj/2006-August/002447.html</a>). To solve this I have used this towgs84 parameters : +towgs84=-99.059,53.322,-112.486,0.419,-0.83,1.885,-0.999999. In QGIS, the towgs84 parameters are different (+towgs84=106.869,-52.2978,103.724,-0.33657,0.456955,-1.84218,1). When I use my GPS software to reproject into Belgian Lambert 72 the waypoints are correctly placed (red points in the image) but not when I use QGIS (yellow points). I think thus there is a problem in the epsg 31370 definition.<br>
<br>Best regards,<br>Thibaut.<br>