[postgis-tickets] [PostGIS] #3733: Cannot ANALYZE table w/ valid features in it

PostGIS trac at osgeo.org
Tue Sep 26 10:52:12 PDT 2017


#3733: Cannot ANALYZE table w/ valid features in it
----------------------+---------------------------
  Reporter:  pramsey  |      Owner:  pramsey
      Type:  defect   |     Status:  closed
  Priority:  medium   |  Milestone:  PostGIS 2.3.4
 Component:  postgis  |    Version:  2.3.x
Resolution:  wontfix  |   Keywords:
----------------------+---------------------------
Changes (by pramsey):

 * status:  new => closed
 * resolution:   => wontfix


Comment:

 OK, so the computation works fine in 2D mode, but in 4D mode it runs afoul
 of this little code block:
 {{{
  if ( ! gbox_is_valid(&gbox) )
   {
     POSTGIS_DEBUGF(3, " skipped infinite/nan geometry %d", i);
     continue;
   }
 }}}
 The super-huge M value gets bumped up to Inf in float space, so the box
 is, from the point-of-view of the stats system, not handle-able.
 I'm going to close this as won't-fix since hte workaround is just to
 force2d the crapping values off your geometries.

--
Ticket URL: <https://trac.osgeo.org/postgis/ticket/3733#comment:3>
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