[postgis-tickets] [PostGIS] #3712: Address MVT issues reported by specification author

[PostGIS]

#3712: Address MVT issues reported by specification author
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  Reporter:  strk     |      Owner:  Björn Harrtell
      Type:  defect   |     Status:  new
  Priority:  blocker  |  Milestone:  PostGIS 2.4.0
 Component:  postgis  |    Version:  trunk
Resolution:           |   Keywords:
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Comment (by flippmoke):

 My concern with that is that honestly users struggle at times to even
 understand how the geometries in vector tiles are even structured. This
 isn't something simple like GeoJSON or WKT that is very visually easy to
 understand as vector tiles have their own coordinate systems. I think
 power users would love to make slices of the pyramid at once, but I think
 it would be a hard for the average user.

 This also makes me think about the best way to deal with projections of
 the tile system prior to creating the tiles. In general vector tiles have
 no relationship to any coordinate system and could be used with any
 rectangular system. Most users however, use EPSG:4326 or EPSG:3857.
 Therefore ST_asMVT might need a srs passed to it, so that scaling and
 offsetting could be auto calculated.

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/3712#comment:8>
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