地下空间GIS二次开发中的数字制图方法研究

地下空间的信息化实现与综合开发利用是21世纪城市建设的主题，也是重大工程建设的基础问题。结合东深供水改造工程地下环境信息系统开发，着重研究了自动化数值制图模块的功能设计、数据搜寻方法、柱状图自动绘制方法、任意剖面图的绘制方法等数字制图方法。在数据搜寻方法中主要强调了数据组织形式和多库协同搜寻方法；在柱状图绘制中发展了固定表格绘制、动态数据填充两种方法；而在任意剖面图的绘制中主要探讨了橡皮筋式剖面线实现方法和剖面数据计算等方法。最后，在东深供水改造工程中进行了应用，结果表明：这些方法具有自动化程度高、高效、准确等优势，并具有较好的纠错性能，对于面向工程实际问题而开发的数字制图功能的设计与实现，具有十分重要的现实意义。

Research on digital mapping methods for secondary development of GIS of underground space

On the utilization of the underground space with major projects, digital mapping based on the secondary development of MAPGIS by C++ Build connected with automatic drawing of histograms and profiles has important significance. By combined with the development of underground environmental information system of Water Supply Reconstruction Project from Dongjiang to Shenzhen in China’s Guangdong Province, China, the function design of automatic digital mapping module and data searching methods as well as automatic drawing methods of histograms and profiles are emphatically introduced. Data searching is emphasized on data organization form and synergistically searching way on multi-database; histogram drawing is developed two ways i.e. fixed table drawing and dynamic data filling; profile drawing is focused on another two ways i.e. elastic-liked realization method of profile lines and data calculation methods of profile data etc. In the application of digital mapping methods to a major project, Water Supply Reconstruction Project from Dongjiang to Shenzhen, the results show that the methods have some advantages such as high automatic extent, large efficiency and high accuracy and also has a better correcting capability. The research has a great value for the development of design and realization of digital mapping in engineering fields.