Hi, It was being worked on at this GitHub issue https://github.com/qgis/QGIS-Mac-Packager/issues/12, and thanks to a GIS grant (http://blog.qgis.org/2020/07/10/qgis-grant-programme-2020-results/) the first test version are now available. No ETA for final release as yet but I'd assume 3.16 now.
Cheers! John. On Sat, 25 Jul 2020 at 13:46, Greg Troxel <g...@lexort.com> wrote: > tl;dr: Why does the mac 3.14 installer use old proj? > > > I've been using 3.10 on NetBSD (built from pkgsrc, against proj 6.3.2), > and on a mac (downloaded from qgis.org). > > I have imagery data in NAD83(2011), claimed to be registered to 0.1m, > and a point feature in ITRF2014 (also about 0.1m), and I am partly > trying to check imagery registration, partly just getting used to qgis. > With the NetBSD build, everything makes sense. With the Mac build, the > alignment of the two is different (and I think wrong). The Mac build is > using proj 5.2.0 and probably is using WGS84 as a pivot datum. I bet > this is using a null transform from NAD83 to WGS84 and then from WGS84 > to ITRF2014, and this is wrong by a meter when transforming modern NAD83 > to ITRF2014. (I understand how this came to be, why it's been replaced > and why it gets low accuracy answers. Regional ground motion is low > enough not to matter at the level of accuracy I am achieving so far.) > > I then installed 3.14.1 on the Mac, from qgis.org, and still got bad > registration, and saw that it's still using proj 5.2.0. I had hoped > that moving off of LTR would get me up-to-date proj. > > It seems obvious to me (said knowing that's very dangerous!) that it's > better to use newer proj with qgis to get the more accurate transforms, > and that a lot of work has been done in both proj and qgis, so I wonder > why the 3.14 official mac build is using old proj, and what the plans > are for moving to proj 6.3.2 or 7.x. > > I'm going to try to build qgis on the mac, using pkgsrc, which will use > newer proj, and see how that is, but I expect to get the same behavior > (that I think is right/better) because it's building the same sources as > I built on NetBSD. > > Thanks for any insight anyone can provide, > Greg > _______________________________________________ > Qgis-user mailing list > Qgis-user@lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
_______________________________________________ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
