How is the line defined? If you have a function, there's calculus. On Sat, Jun 15, 2019, 12:43 AM Nicolas Cadieux <[email protected]> wrote:
> Thanks, > Could work but I think this will be too slow. I wonder how QGIS does it? I > guess they use code from Proj.4. If anyone has an other idea, shoot! > Cheers > Nicolas > > Le 14 juin 2019 à 13:20, Patrick Young <[email protected]> > a écrit : > > Not exactly what you want, but you can do this with PostGIS by casting > your geometry to the geography type: > > https://postgis.net/workshops/postgis-intro/geography.html > > On Fri, Jun 14, 2019 at 10:26 AM Atle Frenvik Sveen <[email protected]> > wrote: > >> Hi! >> >> Not sure if would want to use gdal for this task*, but take a look at >> this blog post: >> >> https://janakiev.com/blog/gps-points-distance-python/ >> >> >> *or if it's doable, i guess not, since the scope of gdal is >> reading/writing geospatial formats >> >> -a >> >> - >> Atle Frenvik Sveen >> [email protected] >> 45278689 >> atlefren.net >> >> On Fri, Jun 14, 2019, at 17:32, Nicolas Cadieux wrote: >> > Hi, >> > >> > I am trying to get the length of a line in python. (Not just the >> > straight length between the first and last nodes). Using geopandas, >> > (therefore the Shapely lib) I am getting the euclidien distance even >> > though the dataframe holdings the line geometries has a CRS (WGS84, >> > zone UTM 18 S). Obviously, the WGS84 Ellipsoid is not taken into >> > account. >> > >> > Can I do this with gdal/ogr? >> > >> > Thanks for the help >> > Nicolas >> > _______________________________________________ >> > gdal-dev mailing list >> > [email protected] >> > https://lists.osgeo.org/mailman/listinfo/gdal-dev >> _______________________________________________ >> gdal-dev mailing list >> [email protected] >> https://lists.osgeo.org/mailman/listinfo/gdal-dev > > _______________________________________________ > gdal-dev mailing list > [email protected] > https://lists.osgeo.org/mailman/listinfo/gdal-dev
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