Generalizacija linija i AutoCAD Map

Nada Vučetić,Miljenko Lapaine

doi:10.15291/geoadria.160

Abstract

The paper offers the results of original research made on the application of AutoCADMap in line generalisation. The differences and similarities have been found out between theDouglas-Peucker method and the method of line simplification that is incorporated inAutoCAD Map. There have been also the inaccuracies found out in AutoCAD Map manualrelating to the issues of buffer width and tolerance, and the line width before and aftersimplification. The paper gives recommendations about pseudo nodes dissolving. It has beennoticed that AutoCAD Map simplification method is not independent of the order of points.The application of the method is illustrated by an example of coastal line of Istria.

Highlights

AutoCAD, the product of the firm Autodesk, is a programme for drawing and editing of drawings on graphic display
AutoCAD Map is intended to engineers, technicians, planners and other persons working on production, creation, maintenance and analysing of maps
The following conclusions can be derived from the research made: - A method for line simplification incorporated into AutoCAD Map is very similar to the well-known Douglas-Peucker method (DOUGLAS, PEUCKER, 1973)

Summary

LINE GENERALISATION AND AUTOCAD MAP

NADA VUČETIĆ MILJENKO LAPAINE Geodetski fakultet - Zagreb Faculty of Geodesy- Zagreb. Primljeno: 2001-06-10 Received: UDC: 912 Original scientific paper Izvorni znanstveni članak. Dani su rezultati izvornih istraživanja o primjeni AutoCAD Mapa na generalizaciju linija. Ustanovljene su sličnosti i razlike u metodi za pojednostavljivanje linija što je ugrađena u AutoCAD Map i Douglas-Peuckerovoj metodi. Utvrđene su netočnosti iz AutoCAD Mapova priručnika koje se odnose na pitanja širine koridora i tolerancije te širine linije prije i nakon pojednostavljivanja. Uočeno je da AutoCAD Mapova metoda za pojednostavljivanje nije neovisna o redoslijedu točaka. Ključne riječi: AutoCAD Map, generalizacija linija, metoda pojednostavljivanja, kartografija. The paper offers the results of original research made on the application of AutoCAD Map in line generalisation. It has been noticed that AutoCAD Map simplification method is not independent of the order of points. The application of the method is illustrated by an example of coastal line of Istria

Introduction

Map generalisation

Description of method and the problem of tolerance

Conclusions