Changes between Version 15 and Version 16 of FDORfc39


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Timestamp:
Jul 14, 2009, 9:26:48 AM (15 years ago)
Author:
oresthalustchak
Comment:

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  • FDORfc39

    v15 v16  
    1111||Last Modified|| Dan Stoica[[Timestamp]]||
    1212||Author||Dan Stoica, Orest Halustchak ||
    13 ||RFC Status||draft||
     13||RFC Status||Ready for Review||
    1414||Implementation Status||draft||
    1515||Proposed Milestone||3.5.0.0||
     
    2727== Motivation ==
    2828
    29 Along with the standard named spatial operators which FDO already suppotrs, 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].
     29Along 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].
    3030
    3131This model has been adopted by MS SqlServer 2008 and PostGIS databases following the OGC syntax; see References [3], [4]. Example:
     
    4444A number of changes in FDO are proposed:
    4545
    46 1) Add new FdoSpatialOperations_Relate to FdoSpatialOperations enumeration.
     461) Add new !FdoSpatialOperations_Relate to !FdoSpatialOperations enumeration.
    4747
    48 2) Assign values to FdoSpatialOperations so they can be bitmapped:
     482) Assign values to !FdoSpatialOperations so they can be bitmapped:
    4949
    5050{{{