On Thursday 29 November 2007 5:17 pm, peter wrote: > I'll try it today and see what happens.
Well, I created the NAD83/MTM Zone 23 projection as suggested and loaded the shape file and it looks better. The shape file is rotated slightly more counter-clockwise so that north-south roads have an azimuth of about 357 degrees (they were about 3 degrees before). In the aerial photo the north-south roads angle a little to the west. However, when I checked the coordinates of a known intersection, they were off by quite a bit: The NAD83 UTM coordinates are: 5513144 N, 368635 E However on my NAD83/MTM Zone 23 projection, the same location comes out to: 5513867 N, 389543 E which is 723 meters further north and about 21 km east... I checked the same intersection on a WGS84 source and came up with: 5512298 N, 368371 E I didn't try georeferencing the photo against the new coordinates since they're so far out, but I did try to load the existing photo...it loaded but wouldn't display. -- Peter Pankonin, digitalcrucible There are 10 kinds of people in the world, those who understand binary, and those who don't. _______________________________________________ Qgis-user mailing list Qgis-user@lists.qgis.org http://lists.qgis.org/cgi-bin/mailman/listinfo/qgis-user
