Changes between Version 15 and Version 16 of FDORfc39
- Timestamp:
- 07/14/09 09:26:48 (15 years ago)
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FDORfc39
v15 v16 11 11 ||Last Modified|| Dan Stoica[[Timestamp]]|| 12 12 ||Author||Dan Stoica, Orest Halustchak || 13 ||RFC Status|| draft||13 ||RFC Status||Ready for Review|| 14 14 ||Implementation Status||draft|| 15 15 ||Proposed Milestone||3.5.0.0|| … … 27 27 == Motivation == 28 28 29 Along with the standard named spatial operators which FDO already suppo trs, OGC specifies the Relate predicate based on the pattern matrix which has the advantage that clients can test for a large number of spatial relationships and fine tune the particular relationship being tested; This pattern matrix is called the Extended Nine-Intersection Model (DE-9IM); see Reference [1].29 Along with the standard named spatial operators which FDO already supports, OGC specifies the Relate predicate based on the pattern matrix which has the advantage that clients can test for a large number of spatial relationships and fine tune the particular relationship being tested; This pattern matrix is called the Extended Nine-Intersection Model (DE-9IM); see Reference [1]. 30 30 31 31 This model has been adopted by MS SqlServer 2008 and PostGIS databases following the OGC syntax; see References [3], [4]. Example: … … 44 44 A number of changes in FDO are proposed: 45 45 46 1) Add new FdoSpatialOperations_Relate toFdoSpatialOperations enumeration.46 1) Add new !FdoSpatialOperations_Relate to !FdoSpatialOperations enumeration. 47 47 48 2) Assign values to FdoSpatialOperations so they can be bitmapped:48 2) Assign values to !FdoSpatialOperations so they can be bitmapped: 49 49 50 50 {{{