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Digital Image Processing 2
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Geo-query: A Geo-object oriented query system integrated with Oracle for GIS
- Relations Between Point Objects to Polygon-objects
- Contain Point Polygon Relation : Given a Point, find all polygon-objects, which contain the point, in a given map.
- Common - point Polygon objects : given a point, find all polygon-objects, which have this point on their boundaries, in a given map.
- Inner point relation : Given a polygon, find all point-objects, which lie within the this polygon, in a given map.
- Bound point relation : Given a polygon, find all point-objects, which are on the boundary of the polygon, in a given map.
- Outside Point relation : Given a polygon, find all point-objects, which lie outside of the polygon, in a given map.
- Relations Between Line-objects to Line-objects
- Interest Line Relation : Given a line, find all line-objects, find all polygon objects, which are intersected by the line, in a given map.
- Converge Polygon Relation ; Given a line, find all polygon-objects, which contain the start node or end node of the line lies within, in a given map.
- Polygon - contain Line Relation : given a polygon, find all line-objects, the whole bodies of which lie within this polygon, in a given map.
- Pass- through - polygon Lien Relation : Given a polygon, find all line-objects, which pass through the polygon, in a given map.
- Convergence Line Relation : Given a polygon, find all line-objects, whose start node or end node lies within the polygon, in a given map.
- Relations Between polygon-objects to Polygon-objects
- Island Relation: Given a polygon, find al polygon-objects, which lie within this polygons an Island, in a given map.
- Contain Polygon Relation: Given a polygon, find all polygon-objects, which are contained as Islands within the polygon, in a given map.
- Polygon - interest Relation: Given a polygon, find all polygon - objects, which overlaps in part with the polygon, in a given map.
- Polygon Separate Relation function : Given a polygon, find all polygon-objects which do not overlap with the polygon, in a given map.
- Polygon Neighboring Relation : Given a polygon, find all polygon-objects, which adjoin with the polygon, in a given map.
The design Geo-query system
- The Eight Function Modules
In Geo Query System, there are eight function modules i.e.
- Master Module: Control the system operation and some utilization procedures.
- Menu Control Module: Menu selection and the menu pop-up and push down.
- Subject-Attributes Query Module: The query about the subject attributes.
Database Attributes Query module: The query about the database attributes.
- Spatial Relation Query Module: to respond the query about the all spatial relations.
- Clipping module: To execute the clipping operation and relevant attributes inheritance.
- Overlaying Module: To execute the overlaying of two maps, and relevant attributes inheritance.
- Result display module: To produce the query result and the result's display.
Note that the subject attribute is defined as the principal attribute of a subject map.
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