[gdal-dev] Ellipsoidal length of a line

[Patrick Young]

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 <atle at frenviksveen.net>
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
>   atle at frenviksveen.net
>   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
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