摘要
缓冲区分析是地图与GIS信息处理的一个重要手段。提出一种判定点在折线缓冲区内的算法,分两步对折线凸侧角点以及一般位置的折线段缓冲区进行分析,重点介绍了折线凸侧角点的缓冲区失真情况。在Google地图中,以判定图上地物标注点是否在沿道路折线的缓冲区范围内为例对此算法进行验证,从而证明了方案的可行性。
Buffer analysis is an important method in map and GIS information processing .The paper proposes an algorism to judge points within the polyline buffer field in two steps：buffer analysis of polyline bulge turning points and general position , especially fo-cusing on distortion at bulge turning points .The paper takes it as the example on Google Map that judges marker points within road polyline buffer field , and its feasibility has been proved by programming .
出处
《测绘与空间地理信息》
2014年第4期94-97,共4页
Geomatics & Spatial Information Technology
基金
广西自然科学基金重点项目(桂科自2011GXNSFD018003)
广西空间信息与测绘重点实验室主任基金项目(桂科能1103108-03)资助
