Carlos wrote: > v.plane - I think the azimuth option here should be > compass-oriented
For decades GRASS has used cartesian theta (CCW from positve x-axis) as the azimuth origin, not CW from north as used in compass orientation. there is no right or wrong answer here, so historical choices win. the mathematicians got to it first that's all. n.b. in the new v.in.geodesic module*, CW from North is used for az, as it is in r.transect. simply because that's what `geod` wants and I didn't spend the effort to invert it. (* along with v.mkgrid, I wonder how to better name these in gr7) Hamish _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user