Opened 2 years ago

Closed 21 months ago

#5146 closed defect (fixed)

ST_AlphaShape and ST_OptimalAlphaShape need more examples

Reported by: robe Owned by: robe
Priority: medium Milestone: PostGIS 3.3.0
Component: documentation Version: master
Keywords: Cc:

Description

I was trying to add some of the same examples that are in ST_ConcaveHull to ST_AlphaShape and ST_OptimalAlphaShape.

Sadly for ST_AlphaShape all my attempts ended in Empty Geometry.

I had much more success with ST_OptimalAlphaShape, but still not quite as good with the examples as ST_ConcaveHull.

I think it's mostly my understanding of they extra arguments and the docs aren't clear enough (in ours or CGAL site) for me to follow.

I also don't think these functions work with anything but Points as all my attempts at feeding in a polygon ended in Empty geometry. Need a note about that if that is true.

Change History (2)

comment:1 by Regina Obe <lr@…>, 2 years ago

In 0e74951/git:

More examples of alpha shapes. Fix arg names. References #5146

comment:2 by robe, 21 months ago

Resolution: fixed
Status: newclosed

I did this already.

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