摘要
针对地图线状符号中的需求,提出了利用自定义线型设计线状符号的新方法,以解决常规线型符号绘制的问题。此外,考虑到线状符号在拐角处易产生严重变形以及出现断裂、自相交等情况,提出了采用符号自适应性及双仿射变换方法的解决途径,实现符号化绘制,增强符号的可视化效果。
A new method of user-defined linetype is put forward to design linear symbol. This method can solve the drawing problems and improve the drawing speed. In addition, with respect to the serious distortion of symbol on the vertices of line, such as symbol breakage, symbol intersection, the methods of symbol self-adaptability and double affine transformation are used to manipulate the distortion, which promotes the visual effect of symbol and meets the need of linear symbol with different styles.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2006年第7期632-635,共4页
Geomatics and Information Science of Wuhan University
基金
国家国土资源部信息中心土地信息图示图例资助项目(2003s304)
关键词
线状符号
符号化
符号自适应性
双仿射变换
linear symbol
visualization
symbol self-adaptability
double affine transformation
