CONCEPT OF THE OBJECT-ORIENTED MULTI-
DETAILED GIS
Graphic User Visual Interface Decision Making
Interface(GUI) System
"=
Query Interpreter > Cartographic > Cartographic Knowledge Sources
(QI) Representation
+ Generalizer | Strategy
| ODODE = <1 | Control
| K (CGen) | Domain Knowledge
A ^] Control
A System of formation of Knowledge
Input documents
GO images and GO
library
Figure 1 Structural scheme of OOMGIS
The details of the concept of the Object-Oriented Multi-
Detailed GIS were proposed in (Khorev, 1996).
| GO Tables
*
1 1
[ Base Topology |] | [ Semantic attribute |
Graphic GO — ]
[GO image |——4 Complex object |
STRUCTURE OF GO CLASSES
GO [727 Map
Generalizer
[ Semantic relationship | [Operation | — T : 1
Point | MBR |
| | | Arc
[Label Point | [Node | [| Vertex | T- T T 1
Line- Net Table | | etc.
Tree
Figure 2 Scheme of GO classes
Entity is a type of phenomenon. GO is and entity model
in OODB. Geographical object is a spatial object.
Geographical object encapsulates behavior and data
associated with geometric figures and their composition.
Geographic tables stores geographical objects. Arc can
be represented as certain data structures. The latter cab
be chosen depending on the efficiency of restoration of
multi-detail representation of an arc as a GO element.
This is done with the help of CG which also accounts for
the type of
entity while choosing the structure of GO geometry. To
do this, CG exchanges messages with the DMS. The GO
images library contains description of structures of
various types of entities, and can be expanded
depending on the requirements of a user.
STRUCTURE OF SYMBOL CLASSES
Detailed Topology Pe)
A basic Units Projection Spheroid
network |
*
l L T md
L————— ——L.. Coordinate System — |
| | Display
hai Composition (Map) | [= Symbol List uA
Mae Graphic Symbol Color
Generalizer - SEED q
3 GO |
Figure 3 Scheme of symbol classes
448
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B4. Vienna 1996
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