国土资源科技管理
國土資源科技管理
국토자원과기관리
Scientific and Technological Management of Land and Resources
2007年
2期
102~105
,共null页
数字高程模型 格网DEM 坡耕地
數字高程模型 格網DEM 坡耕地
수자고정모형 격망DEM 파경지
digital elevation model; grid-based DEM; sloping farmlan
以庄河市1:1万MapInfo地籍数据库为基础。利用地理信息系统软件MapInfo—VM建立格网DEM模型,并通过DEM计算派生出坡度等值面图,再结合矢量化地籍图和相关资料,应用地理信息系统空间分析功能,自动提取坡耕地数据。整个过程主要由计算机进行处理,人工干预少,效率高。
以莊河市1:1萬MapInfo地籍數據庫為基礎。利用地理信息繫統軟件MapInfo—VM建立格網DEM模型,併通過DEM計算派生齣坡度等值麵圖,再結閤矢量化地籍圖和相關資料,應用地理信息繫統空間分析功能,自動提取坡耕地數據。整箇過程主要由計算機進行處理,人工榦預少,效率高。
이장하시1:1만MapInfo지적수거고위기출。이용지리신식계통연건MapInfo—VM건립격망DEM모형,병통과DEM계산파생출파도등치면도,재결합시양화지적도화상관자료,응용지리신식계통공간분석공능,자동제취파경지수거。정개과정주요유계산궤진행처리,인공간예소,효솔고。
On the basis of the cadastral database of one to ten thousand scale, Grid-based DEM is established by using Mapinfo-VM. Sloping contours is derived through calculation by DEM. By means of space-analysis of geographic information system,with the cadastral vectorgraphs and correlative data, sloping farmland data are automatically picked up. In the whole process,computer processing occupies the dominant position and human interference is suppressed. Therefore, the efficiency is high.