[postgis-tickets] [PostGIS] #5147: ST_ConcaveHull gives ERROR: lwgeom_concavehull: GEOS Error: IllegalArgumentException: Edge length ratio must be in range [0, 1]e

[PostGIS]

#5147: ST_ConcaveHull gives ERROR:  lwgeom_concavehull: GEOS Error:
IllegalArgumentException: Edge length ratio must be in range [0,1]e
----------------------+---------------------------
  Reporter:  robe     |      Owner:  pramsey
      Type:  defect   |     Status:  new
  Priority:  blocker  |  Milestone:  PostGIS 3.3.0
 Component:  postgis  |    Version:  master
Resolution:           |   Keywords:
----------------------+---------------------------

Comment (by robe):

 For what it's worth, I can generate the same issue with these


 {{{
 DROP TABLE letters;
 CREATE TABLE letters(name text PRIMARY KEY, geom geometry);
 INSERT INTO letters(name, geom)
 SELECT CHR(65 + i) AS name, ST_SnapToGrid(geom,0.5,0.5)
 FROM generate_series(0,9) AS i, ST_GeneratePoints(ST_Translate(
 ST_Buffer(ST_Boundary(ST_Letters(CHR(65 + i))),1),50,50),50,1) AS geom;
 }}}



 {{{
 SELECT ST_ConcaveHull(geom,0.8)
 FROM letters
 WHERE name = 'A'
 }}}

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/5147#comment:1>
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