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List:       postgis-users
Subject:    Re: [postgis-users] ST_Buffer on a point can generate an extra vertex
From:       Mike Taves <mwtoews () gmail ! com>
Date:       2020-12-12 2:38:01
Message-ID: CAM2FmMr=aUKjzfsyQ=mPuVhONq15d7+Pd_iEAQdE7BSscod35g () mail ! gmail ! com
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On Sat, 12 Dec 2020 at 11:10, Bruce Rindahl <bruce.rindahl@gmail.com> wrote:
> This was intended to get 48 points (12*4) evenly spaced around a point at (0.0) \
> with a radius of 100.  The query above gives 49 points which makes sense (the \
> starting point is duplicated).  However, if you increase the parameter to 13, you \
> get 54 points instead of the expected 53.

Yes, this is an old bug that was resolved this year.
https://trac.osgeo.org/geos/ticket/743

It is fixed for GEOS 3.9.0 (nearly out) and probably in GEOS 3.8.2
(not yet released).
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