首先介绍DXF文件的结构,然后阐述GML数据结构的设计,特别对要素层的数据组织,进行了详细的描述。在此基础上,最终提出GML与DXF格式转换的一个全面的解决方案,并对转换方案的核心环节——语义映射机制的建立,作了深入的探讨。
The structure of DXF file is introduced firstly, then the data structure for GML, especially the organizations of feature layers, are presented. Finally, a general scheme of transformation between GML and DXF is put forward. At the same time, study of semantic mapping mechanism is made. The establishment of semantic mapping mechanism is vital to transformation scheme.