[postgis-tickets] [PostGIS] #5107: "flat" polygon has non-zero area according to ST_Area
PostGIS
trac at osgeo.org
Mon Feb 28 07:13:22 PST 2022
#5107: "flat" polygon has non-zero area according to ST_Area
---------------------+---------------------------
Reporter: strk | Owner: pramsey
Type: defect | Status: new
Priority: medium | Milestone: PostGIS 3.3.0
Component: postgis | Version: 3.2.x
Keywords: |
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Spin-off of #5105, ST_Area can report non-zero area for completely flat
polygons. Example:
{{{
POLYGON((
29.262792863298348 71.22115103790775,
29.26598031986849 71.22202978558047,
29.275379947735576 71.22044935739267,
29.29461024331857 71.22741507590429,
29.275379947735576 71.22044935739267,
29.26598031986849 71.22202978558047,
29.262792863298348 71.22115103790775
))
}}}
Note how the polygon ring is going forward and backward onto the exact
same vertices.
--
Ticket URL: <https://trac.osgeo.org/postgis/ticket/5107>
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