Le Wed, Jul 14, 2021 at 03:48:11PM -0500, dev1...@polarismail.net a écrit : > Hello, > > I have been using the geod command in the proj package to perform > geodetic forward calculations. My testing has produced some rather > unusual output, captured here: > > Script started on Wed Jul 14 15:08:01 2021 > geography.657$ uname -a > OpenBSD ip72.ok.cox.com 6.9 GENERIC.MP#3 amd64 > geography.658$ geod +ellps=sphere +units=km << END > > 0N 0E 269d58' 100.0 > > 0N 0E 269d59' 100.0 > > 0N 0E 270d 100.0 > > 0N 0E 270d1' 100.0 > > 0N 0E 270d2' 100.0 > > END > 0d0'1.883"S 0d53'57.559"W 89d58'0.015" > 0d0'0.942"S 0d53'57.559"W 89d59'0.007" > 0dN 0d53'57.559"E -90d > 0d0'0.942"N 0d53'57.559"W 90d0'59.993" > 0d0'1.883"N 0d53'57.559"W 90d1'59.985" > geography.665$ ^D > > Script done on Wed Jul 14 15:08:18 2021 > > I intended to make five steps of 100 km west from the geographic origin. > It appears that steps approximately west go into the western > hemisphere, as expected. In the third calculation, stepping exactly > west, 270 degrees, obtains a terminus to the east. > > This only occurs on my two OpenBSD machines. Other platforms produce > output like:
you havent at all said what proj version you were running... so i have no idea if what you're seeing is a different behaviour between the openbsd build of proj (options, code portability, etc) and the same version self built on ubuntu, or if that was totally different versions and the different behaviour might come from that.. if so, peruse the changelog between the versions ? either way, i'd recommend you to bring that upstream, since as the packager/maintainer i only care about proj for the projects using it, and i dont have a large knowledge of its internals/workings/tools. Landry
