In the design of the hind part of the processor , because in later processing , there are no special request for the definition of no geometric information in iges file , we have discarded some unnecessary information in dxf file , only kept graphical data information and added some necessary system information , then , through the processing of the algorism , at last written the iges file according to the format of the iges standard 在处理器后部分的设计中,由于后续处理中, iges文件对非几何数据信息的定义不作特别要求,我们舍弃dxf文件中一些不必要的属性信息部分,仅保留图形数据信息部分,加入一些必要系统信息,经过算法处理以后,按iges文件格式写成iges文件。
Second , according to the design project , it realize the following functional modules : ( 1 ) the server ( pc - gis ) functional module ; map layer creation and data synchronization ; ( 2 ) the client ( pda - gis ) functional module : system management , graphical data management , attribute data management , information query , measurement of area and shape , and system help 其次,按照设计方案,实现了以下功能模块:服务器部分( pc - gis )功能模块:图层制作功能,文件格式转换和数据同步功能,客户端部分( pda - gis )功能模块:系统管理功能,图形数据管理功能,属性数据管理功能,信息查询功能,图面型测量和系统帮助功能。