EPSG 9835 is an conversion method which needs some parameters defined:
https://pyproj4.github.io/pyproj/stable/api/crs/coordinate_operation.html#lambertcylindricalequalareaconversion
You can use that conversion to build a projected CRS:
https://pyproj4.github.io/pyproj/stable/build_crs.html#projec
Yes, you are correct, that was one of my first attempts and was wrong
because I don't really understand these projection systems.
I now have a better one which sort of works and produces areas in meters by
setting first system to
sr.SetWellKnownGeogCS("EPSG:4326")
Now I am struggling with selecting
>
> ... but basically I came to the conclusion that when people talk about an
> area of something on Earth they really mean the area of a projection (am i
> right about that?) and so i need to specify a projection before getting a
> meaningful area. So i ended up with this code:
>
> wkt = "POLYGON
The documentation of AssignSpatialReference says:
"Any existing spatial reference is replaced, but under no circumstances
does this result in the object being reprojected. It is just changing the
interpretation of the existing geometry."
You have to reproject the polygon coordinates to actually h
Hi!
I am a complete GIS newbie so please bear with me...
I am trying to get the area of a polygon specified in lon,lat pairs in some
reasonable units, like sq kilometers. My quest so far is documented here:
https://gis.stackexchange.com/questions/374428/default-geo-spatial-reference-system-in-gd
