[postgis-tickets] [PostGIS] #3654: ST_Touches using Minkowski sums

[PostGIS]

#3654: ST_Touches using Minkowski sums
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  Reporter:  stefanpetrea  |      Owner:  pramsey
      Type:  enhancement   |     Status:  new
  Priority:  medium        |  Milestone:  PostGIS 2.3.1
 Component:  postgis       |    Version:  2.3.x
Resolution:                |   Keywords:  overlap, ST_Touches
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Comment (by robe):

 Only the SFCGAL portion of PostGIS has direct dependency on SFCGAL.  So
 this would only be possible to do if

 a) The user has PostGIS compiled with SFCGAL support
 b) The user sets their backend to sfcgal instead of geos.

 Then it would follow the pattern of other functions we have twith wo
 implementations of the function and the

 These are listed with the light cube on this page.

 http://postgis.net/docs/manual-2.3/PostGIS_Special_Functions_Index.html#PostGIS_TypeFunctionMatrix

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/3654#comment:2>
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