DLG图形数据格式转换

DLG Graphic Data Format Transformation

数字线划图(DLG)是数字城市中最重要、使用最广泛的基础地理数据,城市规划需要现势性强的城市大比例尺地形图,对于原有地形图的修测会使DLG在不同的生产工艺和不同软件平台下产生不同的图形数据格式,给规划平台的维护和GIS的入库造成不便。面对这一矛盾,使用VB语言编制转换程序,对DLG每个图元进行程序转换,结合安阳市的情况进行了实验,取得了良好的效果。

DLG is importantly and widely used fundamental graphic data in digital urban planning, Urban planning relies on good display and large scale urban graphics. Through map revision, DLG generate different graphic data format in different process and software platform and cause inconvenience of urban planning platform maintenance and GIS data input. Concerning on this problem, program transfornlation process in VB Language and transform each DLG element data. The way is applied in Anyang and it gets a good effect.