Systems for data processing, anaylsis and representation

Allam, Mosaad; Plunkett, Gordon

Bibliographic data

Monograph

Persistent identifier:: 1067490280

Title:: Systems for data processing, anaylsis and representation

Sub title:: ISPRS Commission II Symposium : June 6 - 10, Ottawa, Canada

Scope:: 1 Online-Ressource (XX, 530 Seiten)

Year of publication:: 1994

Place of publication:: Ottawa

Publisher of the original:: The Surveys, Mapping and Remote Sensing, Natural Resources Canada

Identifier (digital):: 1067490280

Illustration:: Illustrationen

Signature of the source:: ZS 312(30,2)

Language:: English

Additional Notes:: Erscheinungsdatum des Originals ist aus dem Copyrightjahr ermittelt.

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Editor:: Allam, Mosaad; Plunkett, Gordon

Corporations:: Symposium Systems for Data Processing, Analysis and Representation, 1994, Ottawa; International Society for Photogrammetry and Remote Sensing; International Society for Photogrammetry and Remote Sensing, Commission Instrumentation for Data Reduction and Analysis; Kanada, Surveys, Mapping and Remote Sensing Sector

Adapter:: Symposium Systems for Data Processing, Analysis and Representation, 1994, Ottawa; International Society for Photogrammetry and Remote Sensing; International Society for Photogrammetry and Remote Sensing, Commission Instrumentation for Data Reduction and Analysis; Kanada, Surveys, Mapping and Remote Sensing Sector

Founder of work:: Symposium Systems for Data Processing, Analysis and Representation, 1994, Ottawa; International Society for Photogrammetry and Remote Sensing; International Society for Photogrammetry and Remote Sensing, Commission Instrumentation for Data Reduction and Analysis; Kanada, Surveys, Mapping and Remote Sensing Sector

Other corporate:: Symposium Systems for Data Processing, Analysis and Representation, 1994, Ottawa; International Society for Photogrammetry and Remote Sensing; International Society for Photogrammetry and Remote Sensing, Commission Instrumentation for Data Reduction and Analysis; Kanada, Surveys, Mapping and Remote Sensing Sector

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2019

Document type:: Monograph

Collection:: Earth sciences

Chapter

Title:: [Monday, June 6, 1994]

Document type:: Monograph

Structure type:: Chapter

Chapter

Title:: [Session B-1 WG II/3 - Technologies for Large Volumes of Spatial Data - Part A]

Document type:: Monograph

Structure type:: Chapter

Chapter

Title:: PROGRAMMING WITH CONSTRAINTS IN AN OBJECT-ORIENTED GIS FRANCOIS BOUILLE

Write comment:: Text parallel in englischer und französischer Sprache abgedruckt.

Document type:: Monograph

Structure type:: Chapter

illé, 1991b); they ig (Bouillé, 1992). ve not exactly the sometimes replace 3c), they are more spectively expert 1ated learning. , a rule possibly cher for a neuron, tivating a process other a.d.t., as acc re — DT an 's and neurons. red for the present this requirement is e would like to ] representation of , together with a upon a perfectly purpose of the "81, particularly tography (Bouillé, been developped; ical terrain models 7), (Baton-Hubert, ,b), as well as toponymy on the S system includes ist here mention: file system, itabase,based upon 91a), stem managing an ] facts,the database ledge base, ine managing an illimited set of discrete processes, in connection to a second engine managing continous processes, -a neural engine managing an illimited set of object-oriented neurons, possibly fuzzy, ensuring an automated learning, in cooperation with the expert system, -a 3D stereoscopical animated graphical engine, in a multimedia context, -a specific layer devoted to the robotics (Bouillé, 1986), in prevision of the large application of robotics to geography and cartography in the next decade. The complete system includes a compiler-compiler, an ADT'81 compiler, an optimizer, a decompiler and an executer, and provides a complete class-based integrated platform for GIS design and development (Bouillé, 1994b). 3. INTRODUCING CONSTRAINTS Any type may be associated to a condition, which looks like a string, which may be updated at run- time, and which will be executed any time the a.d.t. is invoked by any process. A typical example concerns an atribute named temperature; for creating a class, its attribute and specifying this one, the following statements have been used (figure 10); the result graphicaly appears on the figure 11. CREATE "AREA" ; Fig. 10 : Basical condition in ADT'81. COND + temp »0 AREA neu Fig. 11 : The consequence of the statements. In this first simple example, an attribute only was concerned; in a second very simple example, we consider an area which number of neighbors cannot be greater than 6, for instance; for expressing that, 43 we have created the link between classes which is "NEIGHBOR", it is a link on the class "AREA" itself; for obtaining at run time all the links going out of an object of the class "AREA", we need to use a functor entitled : OPSCRC (Object Positive Semi- Cocircuit restricted to the Relationship and final Class), and for obtaining the final objects, we need the functor entitled OFIN (Object FINal); for having the number of these neighbors, we just need the functor entitled CARD, which name naturaly does not require any explanation: the necessary statements are expressed on the figure 12 below. CREATE "AREA" "neighbor" "AREA REFLEXIVE : "AREA" "neighbor" "AREA" ' COND :- THIS'OPSCRC("neighbor" "AREA") OFIN'CARD»-46 : Fig. 12 : Basical condition on a link. The result may be seen as expressed on the figure 13, expressing that the neighbor is carrying a condition which will be tested any time a new link between objects will be instanciated, corresponding to this link on the class "AREA". COND this'OPSCRC("neighbor" "area")'ofin'card»-6 + neighbor AREA Fig.13 : The consequence of the statements. This concept of condition, expressed by COND is not the only one allowing to perform automaticaly something in connection to a given a.d.t. ; another one, more complex is named ACTION. An ACTION is a set of statements, associated to an a.d.t., accepting any programming statements, in any number; at run-time, when the a.d.t. is invoked, the action is automaticaly executed. This ACTION is a string which can be assigned, modified or deleted at run-time; for instance, it can be read from the user peripheral. Likewise for the condition. An action may for instance update the condition of any other a.d.t.. The User may easily remark that an a.d.t. simultaneously carrying a condition and an action exactly looks like a rule. In fact, it allows to make an economy of this one, and is more flexible. A condition, COND, may contain a more complex = ee ua a ax CE oe mcs z= = Ï | | j | 4 |

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