[Gdal-dev] geod: azimuth to degrees
cplist at earthlink.net
Mon Nov 6 10:15:43 EST 2006
> I think you've already got what you need? Geod outputs an azimuth, then
> a back azimuth, followed by distance. The two azimuths are different
Yes, it was an i d 10 t error, for sure. Even though I poured over the man
page over and over again, I thought the 1st two #'s were part of a lon,lat
pair. So the rest of the time I just spent slamming my head against the
> I've been using the perl Math::Trig module to do something similar and
> it works pretty well so far. Might give geod a try to compare my
> results now though...
I'm good to go now! I had been using PostGIS's azimuth w/ great results and
I wanted to avoid calling the db for each of these computations. I, too,
have noticed very small % differences among the results, but they are well
w/i our tolerance.
More information about the Gdal-dev