Geographic information system ( gis ) is technical system by means of computer . by certain format , gis can input , deposit , search , display and analyze all kinds of spatial data in the real - life world and attribute data , which describe the attributes of spatial data 地理信息系统( gis )是一种以计算机为手段,对现实世界的各类空间数据及描述这些空间数据的属性,以?定的格式输入、存储、检索、显示和综合分析的技术系统。
In the course of the database design , after the design of space database structure , code , special symbol and the analysis of attribute data structure , using the database of maplnfo and access to build up and manage spatial and attribute data 在数据库设计中通过对空间数据库的结构设计、代码设计、专题符号设计以及属性数据结构分析等的基础上,利用mapinfo4 0自带的数据库和access数据库建立和管理本系统的空间数据和属性数据。
The soil attribute data are built based on the second soil general investigation and samples got outside and analyzed inside . the assessment system of nanjing soil quality is built by taking advantage of principal component analysis and multiple linear regression equation 在第二次土壤普查资料和野外采样分析基础上建立土壤属性数据库,用主成分分析法和多元回归法对南京不同类型土壤进行生产潜力评价,建立南京土壤质量评价体系。
Main content of this study are as follows . ( 1 ) establish the information system of environmental monitor using the language and gis software , build up the information system for this region , gold mine environmental spatial data base , attribute data base and analysis model data base 研究的主要内容包括: ( 1 )建立环境监测信息系统利用相关地理信息系统软件和语言软件进行二次开发,构建起金矿环境空间数据库,属性数据库和分析模型数据库。
Based on the mapgis software , this paper discusses the method of dividing layer , assigning layer , coding layer of graphic data and the method of coding id key character related to the attribute data in the process of establishing the geological disaster information database of wayaogou valley of xining city 摘要介绍了基于mapgis平台建立瓦窑沟流域地质灾害数据库过程中,图形数据的图层划分、命名、编码及与属性数据相连接的id关键字段的编码方法。