On Wed, 13 Dec 2006, Tom Russo wrote: > Now a question: is anyone aware of a good tool for tweaking shapefiles, as in > removing garbage points? I downloaded a GPS track, and there was a single > extra point at the beginning that was garbage --- several degrees jump from > the first and second point, and after that it was fine. Xastir is drawing > a huge line from the starting point to the second point, and has a rendering > problem at zoom levels below 8 when it tries to draw that line (fills the > screen > with horizontal bars). Unfortunately, I cannot find any tool that will let > me delete that first point from the shapefile. I've tried qgis, but even > though it'll let me edit the layer and will flash the point when I click > the "delete vertex" tool on it, it doesn't actually do the deletion. Grrr. > Any helpful hints would be welcome.
Can't help you on the editor, except perhaps GRASS. As far as the horizontal lines all over the screen, that's a known X11 bug. It happens if we have X/Y screen coordinates that are over 15 or 16 bits I think. There are places all over Xastir where we try to prevent calling the X11 functions with numbers higher than 15000 or so. Perhaps the GPS trail display code doesn't have that. -- Curt, WE7U. archer at eskimo dot com http://www.eskimo.com/~archer Lotto: A tax on people who are bad at math. - unknown Windows: Microsoft's tax on computer illiterates. - WE7U. The world DOES revolve around me: I picked the coordinate system!" _______________________________________________ Xastir mailing list [email protected] http://lists.xastir.org/cgi-bin/mailman/listinfo/xastir
