• Aucun résultat trouvé

Presentation

N/A
N/A
Info
Télécharger
Protected

Academic year: 2022

Partager "Presentation"

Copied!
21
0
0

Chargement.... (Voir le texte intégral maintenant)

Texte intégral

(1)

1

GeKon

applying novel aproaches to GIS development

Tomáš Richta cs.felk.cvut.cz

(2)

2

Outline

• Introduction

• Object-oriented approach

• GeKon project

• Conclusion and future work

(3)

3

Introduction

• GIS evolution

– digitalization of cartography

• points, lines and polygons

– additional information

• DBF files, images

• Present GIS data management

• Semantic gap

(4)

4

Present GIS data management

• SHP, SHX, DBF, SBN, SBX files

• SQL databases

• high level of granularity

• layered structure

• no topology

• primitive geometry

• sophisticated analyses

(5)

5

(6)

6

(7)

7

(8)

8

Semantic gap

real world

maps

points, lines, polygons

records

(9)

9

Object-oriented approach

• OOA as the solution of the problem

– data and functionality are encapsulated – objects communicate by messages

– objects are able to inherit propeties – objects are collected in classes

– objects could have relationships

• Object-oriented modelling

• GIS development projects

(10)

10

Object-oriented modelling

• Balovnev et al. (1999) – GeoToolKit

• Nebiker (2003) – DILAS server

• Kolbe & Goeger (2004) – CityGML

(11)

11

(12)

12

(13)

13

(14)

14

GIS development projects

• Papers

– Michael Kofler (1998) – R-trees for visualizing and organizing large 3D GIS databases

– Balovnev et al. (1999) – GeoToolKit

– Lurie et al. (1997) – A Smalltalk-based extension to traditional GIS

– Chance et al. (2000) - Smallworld GIS: An object-oriented GIS – issues and solutions

(15)

15

GeKon project

• student project

• under development

• primarily designed as data convertor

• could serve as a classical GIS

• Squeak Smalltalk

– Morphic – Shapes

– OmniBase

(16)

16

(17)

17

(18)

18

Conclusion and future work

• GIS development requirements

• Further steps in GeKon project

(19)

19

GIS development reqiurements

• separate geometric representation

• use proper indexing structure

• build the system from user interface

• let the user construct the domain model

• incorporate only pure object technologies

(20)

20

Further steps in GeKon

GeKon

GeKonSystem

GeKonInputDevices GeKonNetworking GeKonDI GeKonCore GeKonGUI

GeKonVisualizationManager

OpenGLVisualizer MorphicVsualizer PDFWriter

GeKonAnaysisManager StructureAnalyst

SpaceAnalyst ShapeAnalyst

GeKonIndexingManager IndexedTables

IndexedTrees IndexedFiles

GeKonDataManager

DataManipulator DataReader DataWriter

CellStore

(21)

21 Thanks for your attention

Références

Télécharger maintenant ( PDF - 21 Page - 1.09 MB )

Documents relatifs

The e-World as an enabler to learn

From HBR March-April 1998, “The Power of Virtual Integration: An Interview with Dell Computer’s Michael Dell”, p78 Global enterprise accounts Large companies Midsize

Seasonal variation in atmospheric relative humidity contributes to explaining seasonal variation in trunk circumference of tropical rain-forest trees in French Guiana

Thus, since large interspecific differences in sapwood and bark thickness and water content do exist among tropical rain-forest species (Hegde et al. 1998, Roth 1981),

Cognitive support at encoding attenuates age differences in recollective experience among adults of lower frontal lobe function David Bunce Goldsmiths College, University of London Appears

data that involvement of the prefrontal cortex in semantic elaboration and organization (Brewer et al., 1998; Wagner et al., 1998) during encoding, may have raised autonoetic

Age-related differences in valence and arousal ratings of pictures from the International Affective Picture System (IAPS): Do ratings become more extreme with age?

Table 1 provides mean ratings of valence and arousal from the present and previous rating studies (Ito et al., 1998; Lang et al., 1998; Libkuman et al., 2007; Ribeiro et al.,

Concept-Oriented Access to Longitudinal Multimedia Medical Records: A Case Study in Brain Tumor Managemen

In this paper we present a case study in organizing, accessing, and visualizing information obtained through structuring the multimedia and multimodal data for brain tumor

Viandes déstructurées dans la filière porcine : Effets combinés des durées de transport et d’attente sur la fréquence d’apparition du défaut

Conformément à plusieurs résultats précédemment publiés (BALAC et al., 1998 ; FRANCK et al., 1999, 2000 ; AUBRY et al., 2000 ; MINVIELLE et al., 2001; BOUFFAUD et al., 2002) les

based on uncertain manhole cover locations

 Reproduce the layout of existing networks using node to link information provided by urban databases and operators (Allard et al., 2013 and Blumensaat et

Self-Organizing Surface-Initiated Polymerization of Multicomponent Photosystems: Stack Exchange with Fullerenes

Self-Organizing Surface-Initiated Polymerization of Multicomponent Photosystems: Stack Exchange with Fullerenes.. BOLAG, Alatengbaolige,