نوع مقاله : مقاله پژوهشی

نویسنده

دانشیار دانشگاه صنعتی مالک اشتر

چکیده

این مقاله به تشریح چگونگى ژنرالیزاسیون نقشه متناسب با نیازهاى متفاوت کاربران با استفاده از یک پایگاه داده‏اى چند مقیاسى مى‏ پردازد. اساس و پایه چنین تولیدى به تجزیه و تحلیل نیازمندی هاى تهیه نقشه بنابرخواست کاربران استوار است و درخواست هاى گوناگون و محدودیت هاى کارتوگرافى مورد نیاز کاربر را نشان مى ‏دهد. مبناى اصلى در این بررسى ترکیب دو رویکرد کارتوگرافیک:
1 - بهره‏ بردارى از پایگاه داده‏اى چند مقیاسى که شامل دو یا چند سطح از جزئیات است و
2 - استفاده از روش هاى ژنرالیزاسیون کارتوگرافى مى‏ باشد.
این مقاله براى موضوعاتى انتخابى (طبقه بندى اطلاعات) طراحى و اجرا گردیده و پیاده سازى گزینه ‏ها را جهت پایگاه داده‏اى چند مقیاسى و ژنرالیزاسیون بخش هایى از چارچوب مورد بحث و ارزیابى قرار مى ‏دهد. اهمیت در ترکیب بهینه این دو روش است، یعنى کارهایى که به وسیله پایگاه داده ‏اى چند مقیاسى حل مى‏ شود و نیز اقداماتى که باید از طریق فرایند ژنرالیزاسیون انجام پذیرد.

کلیدواژه‌ها

عنوان مقاله [English]

Cartography and the Internet: Part IV

نویسنده [English]

  • Mahdi Modiri

Associate Professor of Urban planning, Malek-Ashtar University of Technolog

چکیده [English]

This paper describes map’s generalization according to different needs of users by using a multi-scale database. The base of such production is the analysis of the maps’ requirements according to users’ demands, and indicates various needs and limitations of the cartography demanded by the user. The main basis of this examination is the combination of two cartographic attitudes:
1. Utilization of multi-scale database which includes two or more levels of details; and
2. Using cartography generalization methods.
This paper has been designed and conducted for selective topics (information classification) and discusses and analyzes implementation of choices of multi-scale database and generalization of parts of framework. The importance lies in optimal combination of these two methods, namely matters that are resolved by multi-scale database, as well as actions that must be performed through generalization process.

کلیدواژه‌ها [English]

  • Multiple-Scale Database (MSDB)
  • instantaneous generalization
  • level of phenomena detail
  • map production website
  • user-ordered map
1- Airault S(1996)De la base donnees a la carte:une approache global pour l'equarrissage de batiment. Revue international de geomatique6(2-3):203-217.
2- Bader M(2001)Energy Minimizing Methods for Feature Displacement in Map Generalisation. Ph.D.thesis,Department of Geography,University of Zurich.
3- Buttenfiled B(1993)Research Initative Multiple Reperesentations.Closing Report,National Center for Geographic Information and Analysis,Buffalo.
4- Ceconi A,Weibel R(2001)Map Generalisation for On-demand Mapping.GIM International, Magazine for Geomatics15(5):12-15.
5- CeconiA(2001) Schema for a Multiscale Detabase for Selected Object Classes [online]. Internal Report University of Zurich,Available from: www.geo. unizh. ch/~acecconi/gendem/msdb.
6- Devogele T,Trevisan J,Raynal L(1997)Building a Multi-Scale Database with Scale- Transition Relationships.In:Kraak MJ,Molenaar M(eds)Advances in GIS Research II.Taylor&Francis,London pp,559-570.
7- Glover E,Mackaness WA(1999)Dynamic Generalisation from Single Detailed Database to Support Web Based Interaction.In:Proceedings of the 19th International Cartographic Conference .Ottawa,pp1175-1184.
8- Hangouet,IF(1996)Automated Generalisation Fed on latent Geographical Phenomena Inproceedings of InterCarto 2.Irkutsk,pp125-128.
9- Jones C,Abdelmoyt Al,Lonergan ME,van der poorten P,Zhou S(2000)Multi-Scale Spatial Database Design for Online Generalisation.In:Proceedings of the 9th Spatial Data Handling Conference. Beijing,pp7b.34-7b.44.
10- Kilpelainen,T(1997)Multiple Representation and Generalisation of Geo-Database for Topographic Maps.ph.D.thesis,Publication of the Finnish Geodetic Institute,Helsinki.
11- KraakMj,Brown A(2000)Web Cartography:Developments and Prospects. Taylor & Francis, NewYork.
12- LoweDG(1988)Organization of Smooth Image Curves at Scales.In:Proceedings of the 2nd International Conference on Computer Vision.Tampa pp558-567.
13- McMaster RB,Shea KS(1992)Generalisation in Digital Cartography,Association of American Geographers,Washington.
14- Peterson MP(1999)Trends in Internet Map Use:A Second Look .In:Proceedings of the 19th International Cartographic Conference.Ottawa,pp571-580.
15- Ratajski L(1967)Phenomenes does points de generalisation.In:International Yearbook of Cartography, Vol,VII.Gutersloh Bertelsmann,Bonn-Bad Godesberg pp,143-152.
16- Sederberg TW,Greenwood E(1992)A Physically Based Approached to 2-D Shape Blending. Computer Graphics 26(2):25-34
17- Timpf S,Devogele T(1997)New Tools for Multiple Representations.In:Proceedings of the 18th International Cartographic Conference.Stockholm,pp1381-1386.
18-Thoson RC,Brooks R(2000)Efficient Generalisation and Abstraction of Network Data Using Perceptual Grouping.In:Proceedings of the 5th International Conference on Geo Computation. Manchester(CD0Rom).
19- Van Oosterom P,Schenkelaars V(1995)The Development of an Interactive Multi-Scale GIS. International Journal of Geographic Information Systems9(5):489-507.
20- Weibel R,Dutton G(1999)Generalizing Spatial Data and Dealing with Multiple Representations .In:Longley P,Goodchild MF,Maguire DJ,Rhind DW(eds)Geographical Information Systems:Principles,Techniques,Management and Applications.John Wiley, Chichester, pp125-155.