[postgis-devel] [PostGIS] #1160: operator = returns wrong results checking two POINTS

[PostGIS]

#1160: operator = returns wrong results checking two POINTS
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  Reporter:  gabrimonfa  |       Owner:  pramsey      
      Type:  defect      |      Status:  closed       
  Priority:  medium      |   Milestone:  PostGIS 1.5.4
 Component:  postgis     |     Version:  1.5.X        
Resolution:  wontfix     |    Keywords:               
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Comment(by gabrimonfa):

 robe,

 it's ok for me to close the bug.

 I would suggest. however, to add a word of caution to the doc of current
 stable version to point out that float4 is used for bounding boxes.

 {{{
 SELECT
 ST_AsText('0101000000EC51B85E200D3A4114AE47318E635241'::geometry),ST_AsText('010100000052B81E45200D3A417B14AE378E635241'::geometry);
           st_astext           |          st_astext
 ------------------------------------------------------------
  POINT(1707296.37 4820536.77) | POINT(1707296.27 4820536.87)
 }}}



 As you can see the 2 points are not so close and one would think that the
 bounding box of a point is the point itself.

 Without knowing that float4 is used for bounding boxes the result may
 indeed appear to be wrong.

-- 
Ticket URL: <https://trac.osgeo.org/postgis/ticket/1160#comment:2>
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