[postgis-tickets] [PostGIS] #5279: ST_ClosestPoint and ST_ShortestLine for geography

[PostGIS]

#5279: ST_ClosestPoint and ST_ShortestLine for geography
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 Reporter:  robe         |      Owner:  pramsey
     Type:  enhancement  |     Status:  new
 Priority:  medium       |  Milestone:  PostGIS 3.4.0
Component:  postgis      |    Version:  master
 Keywords:               |
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 I recall latot asking about this and that was why he was interested in s3.

 Paul it's my understanding from IRC that you already compute ClosestPoint
 on both objects


 {{{
 PostGIS calculation finds the projected point using spherical math, and
 then returns the spheroidal distance between those points
 12:39PM
 I guess for the right conditions the projected point could be different
 enough to drive those differences? Kind of hard to fathom it's that
 different, given that the final distance is calculated on the spheroid...
 feel like the projected point would have to differ a LOT.
 }}}


 so I presume you can just tease this out to create a ST_ClosestPoint and
 ST_ShortestLine for geography?
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Ticket URL: <https://trac.osgeo.org/postgis/ticket/5279>
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