管网GIS数据的管点符号共享研究

Pipe-point symbol's sharing of GIS network data

管网GIS数据中的管点符号具有比较丰富的图形表达,如果不能解决管点符号在不同GIS平台里的共享问题,在数据转换后,管网GIS数据将丢失原有的管点符号信息,给数据的理解和使用带来极大的困难。由于主流GIS软件都支持对TrueType字符的显示,因此,基于TrueType字符库可以实现GIS系统间点符号信息的直接无损共享,并用MapInfo、CAD和ArcGIS环境下的管点符号共享实例充分验证了该共享方法的有效性。

Pipe-point symbol of GIS network data has abundant graphic representation.If sharing of pipe-point symbol on various GIS platforms can not be resolved,GIS network data will lose their primary pipe-point symbol information after data transformation,which will bring great difficult to data's understand and employment.Because main GIS software can support the display of TrueType font symbol,based on TrueType font symbol library,point symbol's lossless sharing between GIS systems can be realized.Pipe-point symbol sharing in MapInfo,CAD and ArcGIS are exemplified in the paper,which has verified the validity of the sharing method.