摘要
在综合分析评价了现有的道路网连通度指标定义的基础上,总结了其存在的局限性,即缺乏连通度时态变化信息。为克服这一局限性,从时态的视角对道路网连通度指标进行了全新的定义,结合道路网交通状况的时态变化,提出了一种能在时间上动态反应道路网连通度变化的指标——道路网的实况连通度指标,最后通过一个计算实例进行了实证分析。道路网连通度的时态变化得到了验证。
Based on the analysis of the exiting road network connectivity evaluation indexes, this paper pointed out the limitation of these indexes,which is missing temporal information. To overcome the limitation,the paper proposed a new connectivity definition from the perspective of temporal. Combining with the changes of road status,it put forward a new index - live connectivity index of road network,which can reflect the change of road network connectivity in the time dimension. At last,taking a example to verify the temporal change of road network connectivity.
出处
《测绘与空间地理信息》
2010年第1期81-83,86,共4页
Geomatics & Spatial Information Technology
基金
国家自然科学基金项目(40801152)资助
关键词
道路网
连通度指数
时态变化
道路交通状况
视角
road network
connectivity indexes
temporal change
road network traffic status
perspective
