Hello,
> today i am searching for a postgis based solution which gives
> me an answer on the question
>
> isClockwise(POLYGON)
>
> and if this is true
>
> reverseWindingOrder(POLYGON)
>
PostGIS provides the following function :
ST_ForceRHR(geometry)
Force polygons of the collection to obey Right-Hand-Rule.
Does that suit your needs or you really want to test if your polygon is
clockwise ?
Regards,
Vincent
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