摘要
针对扫描跟踪数字化和手扶跟踪数字化2种建立草地资源图形数据库的常用方法,分析了2种方法在面积量算方面的精度。通过综合分析图纸,根据图形的大小和复杂程度选取了27块图斑,在地理信息系统软件MapInfo的支持下,求其面积,与数字式求积方法对比,通过相对误差分析,表明扫描跟踪数字化法优于手扶跟踪数字化法。
Scanning digitization and manual trailing digitization were used to measure grassland area. Through analyzing the map synthetically, 27 patches were selected to study the precision in measuring area using MapInfo GIS based on patch size and complicacy. The precision of the two methods was compared based on digital planimeter. Results of relative error analysis showed that scanning digitization excelled manual trailing digitization.
出处
《草业科学》
CAS
CSCD
2008年第4期28-30,共3页
Pratacultural Science
基金
新疆维吾尔自治区科技厅资助项目(200442110)
新疆维吾尔自治区草地资源与生态重点实验室资助项目(XJDX0201-2005-02)
关键词
扫描跟踪数字化
手扶跟踪数字化
面积
精度分析
scanning digitization
sanual trailing digitization
area
precision analysis
