[fdo-internals] About distance and spatial operations
gavin.cramer at autodesk.com
Sat May 26 22:08:50 EDT 2007
Hi, Mateusz. CoveredBy and Inside correspond to the same-named Oracle
Spatial SDO operators. See
intro.htm#i880253 . Inside selects geometries that are strictly inside
the filter's boundaries. CoveredBy selects geometries that are both
inside and touching the boundaries (which I find a bit odd).
All of the other SpatialCondition operators are intended to be the same
as the respectively named OGC operators.
As for the DistanceOperations, "Within" should be the same as the
SpatialOperations_Within, except allowing for the offset distance. See
SDO's SDO_WITHIN_DISTANCE. "Beyond" is everything else (i.e. Disjoint
from the filter geometry's boundary, plus the offset distance).
From: fdo-internals-bounces at lists.osgeo.org
[mailto:fdo-internals-bounces at lists.osgeo.org] On Behalf Of Mateusz
Sent: Saturday, May 26, 2007 8:30 PM
Subject: [fdo-internals] About distance and spatial operations
Where can I find detailed specification/requirements of following
I'm also interested in differences between these two last operations
and OGC spatial predicates, ie. what's differences between Within and
Thanks in advance!
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