Spatial Data Processing About Land Utilization With GIS Platform

During these years, GIS (Geographical Information System,or Geo-Information System) is being on a rapid development phase not only in theory, but in application as well. It has become a research domain of multiple-subject crossing and multiple-direction discussing. That GIS technology is applied to land utilization status management, it will greatly improve the work efficiency and quality for the department of the land management, and make the land information more accurately and more currently, and therefore it provides a scientific decision basis for utilizing land resource properly.Spatial data processing is an important capability of GIS. The quality controlling of spatial data and the format transforming of spatial data, which are the main components of the thesis, are the two important aspects of spatial data processing. Combining the project of land utilization status management, the thesis analyzes and discusses spatial data processing about land utilization, and provides some practical scheme on designing and realizing ideas.The paper introduces the development status and trends of GIS, spatial data model and spatial data structure about technology characteristic.Then according the procedure of land utilization status management, system analyse and design scheme is provided and modules are divided. Moreover, the theory analyse is given about appraising, source and control idea of spatial data quality and the design of the realizing of spatial data quality control is discussed, combining the pre-process module, therefore a design is provided about realizing the pre-process of spatial data. Furthermore, the several methods of data-sharing is analyzed and compared, and the data transforming scheme between Maplnfo and CNSDTF(Chinese National Geo-spatial Data Transfer Format) is introduced combining the data transforming module. Finally, some key technology and realizing means about spatial data processing is discussed.In the conclusion part of the thesis, some results are given as follows:(1) A practical system design of "Land Utilization Alteration Survey Information System" is provided;(2) Spatial data quality control is explored and realized by programming;(3) Spatial topology relation is analyzed and researched, and some idea of the checking spatial topology relation is provided and realized;(4) The data transforming and exchange between Maplnfo and CNSDTF is solved;...