The development and application of the kernel software of Microcomputer Geo-graphic Infomation System (MIGIS)
Wang Zhenwu, Wang Liang, Tang Xinming, Yang Jun
Research Institute of Surveying and mapping beijing, China
Abstract
This paper advances the basic idea of developing a kernel software of micro computer geographic information system to which the specific module for various specialities can be attached, and introduces the kernel software of MIGIS (Micro -GIS) developed by the end of 1988 by the Research Institute of Surveying and Mapping. The system design, system design, system structure and basic functions of each model will be given. It also gives a brief introduction to the practical system - Landuse Analysis and management System (LAMS), developed by the institute based on MIGIS.
MIGIS has outstanding characteristics, e.g. simple in graphic preprocessing, flexible in data inputing and editing, automatically setting up topology and searching errors, and standard map symbol base as well as marginal decoration , and easy to retrieve, update and maintenance , etc.
Introduction
Geographic information system (GIS) is a computerized system which can store, manipulate and analyse both spatial data and the attributes associated with it. In recent years, with the increasingly raising of the microcomputer performance/ price ration and development of all discipline fields microcomputer information systems especially the thematic information systems oriented to certain discipline are welcomed by users increasingly. Therefore, it is necessary to develop a microcomputer general GIS kernel system which can be taken as the kernel and basic of a thematic information system, then, combine and utilize the subject research , enrich and develop continuously the specific module which is available for different specialties.
MIGIS (MICRO GIS) is just developed on the basis of this idea. Meanwhile, the first specific information system, landuse analysis and management system(LAMS) taken MIGIS as kernel was developed by the end of 1988. The purpose of this system is to coordinate the national lansuse investigation, and complete office mapping, area measurement and establish landuse data base at county level in the investigation work. The system has been or trial in aprt of intended areas. The paper will indicate the basic design principle, structure and performance feature of MIGIS, a brief introduction will be made on several specific modules of landuse analysis and management system.
System environment of MIGIS
| Host Computer |
: IBM PC/AT or its compatible computer |
| Internal Storage |
: one Mbyte or above |
| Hard Disk |
: 30 Mbyte or above |
| Floppy |
: 1.2 Mbyte (360 Kbyte aletrnative) |
| Communication Port |
: one parallel one serial or one parallel two serial |
| Display |
: high resolution (640 350 ) color graphic display |
| Display Card |
: EGA card |
| Digitizer |
: A1 format , 16 key |
| Plotter |
: A1 format |
| Printer |
: 24 pin line printer |
| Operation System |
: DOS above 3.0 |
| Chinese Character |
: CC-DOS or Chinese card |
