[postgis-tickets] [PostGIS] #4127: ST_Dimension returns 0 for empty GeometryCollection

[PostGIS]

#4127: ST_Dimension returns 0 for empty GeometryCollection
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  Reporter:  esparano  |      Owner:  pramsey
      Type:  defect    |     Status:  closed
  Priority:  medium    |  Milestone:  PostGIS 2.4.5
 Component:  postgis   |    Version:  2.4.x
Resolution:  fixed     |   Keywords:
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Comment (by esparano):

 I have to strongly disagree with changing the docs versus changing the
 behavior of the code to match the docs. The dimension of a Point is 0
 because it is, mathematically, a 0-dimensional object. However, the
 dimension of an empty geometry is not actually 0. It's undefined. It makes
 more sense to return -1, like the function returns for NULL.

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/4127#comment:4>
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