Fixing the code prefix fixed the issue. Thanks Nyall! Ad proj build: funnily enough, QGIS aboug says "Running against PROJ Rel. 7.0.0, March 1st, 2020" ... Welcome to the future!
Anita On Mon, Nov 18, 2019 at 9:36 AM Anita Graser <[email protected]> wrote: > > > On Mon, Nov 18, 2019 at 4:40 AM Nyall Dawson <[email protected]> > wrote: > >> On Fri, 15 Nov 2019 at 05:34, Anita Graser <[email protected]> wrote: >> > >> > Hi, >> > >> > I recently noticed that the expression I used in >> https://anitagraser.com/2016/10/09/movement-data-in-gis-2-visualization/ >> does not work in current QGIS versions anymore. Specifically, I computed >> the metric length of a line segment by transforming from WGS84 'EPSG:4326' >> to 'EPSG:54027': >> > >> > length( >> > transform( >> > geometry_n($geometry,@geometry_part_num), >> > 'EPSG:4326','EPSG:54027' >> > ) >> > ) >> > >> > While debugging, I found that the transformation is not applied >> anymore. (Some other EPSG codes do work though.) However, I couldn't figure >> out how to get this transformation to work again. >> >> Is this a proj 6 based build? In any case, EPSG:54027 doesn't exist. >> The correct code is "ESRI:54027" (see https://epsg.io/54027). > > > Good catch, different four letters starting with E! The issue appeared on > OSGeo4W so I'll have to check if that means proj6 already. Anyway, I'll > give the other code a try! > > Thanks > Anita > > > > >> It's >> possible that < proj 6 builds had some exception in place for this >> particular CRS, but with a proj 6 based build we rely on proj to >> interpret CRS auth/id pairs so any exceptions in place for earlier >> QGIS versions won't apply anymore. >> >> Nyall >> >
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