[postgis-devel] ST_Centroid for arc centroid(arc->points) or centroid(arc->line)

[Rémi Cura]

Hey,

What would you think would be the best course to extend ST_Centroid to work
on arc.

 1. ST_Centroids(ST_Points(arc))
 2. ST_Centroids(ST_CureToLine(arc))

I would prefere option 1 as it does not introduce sampling issues.

Maybe the correct answer would be to mimic centroid(linestring),
that is weight point with circular length?

Cheers,
Rémi
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