摘要
为了解决移动终端有效显示问题,提出利用z值序列实现多尺度显示的方法。该方法利用z值序列,通过计算网格和空间对象的拓扑关系记录其关联的网格位置信息,形成关于空间网格的主导数据库。通过查询选定尺度的z值序列生成相应比例尺数据,实现空间数据的多尺度表达与显示。实验结果证明,该方法具有一定的可行性和有效性,同其他方法相比具有更短的可视化时间和良好的显示效果。
To solve the problem of multi-scale display in mobile terminal, a method of multi-scale display based on z-values is proposed. The primary database, which is pertinent to spatial grid, is built in this method using z-values and by computing the topological relationship between the grid and the spatial object and then recording the related location information of the grid. Corresponding scale data is generated through querYing the selected z-values, the multi-scale expression and display of spatial data is then achieved. Experimental result proves that the method is available and effective to certain extent, and has shorter visualisation time and better display effect than other method＇ s.
出处
《计算机应用与软件》
CSCD
北大核心
2012年第12期130-132,共3页
Computer Applications and Software
基金
辽宁省教育厅高校科研项目(2009A301)
关键词
z值序列
空间拓扑关系
多尺度
z-values Spatial topological relationship Multi-scale
