在ArcGIS中C/S结构多客户端渲染不一致问题的研究

摘要

在ArcGIS的网络应用环境中,地图要素的空间数据和渲染数据是分开存储的,空间数据存储在地理空间数据库中,而渲染数据以文件形式存储.因此在多客户端展示相同的ArcGIS空间数据时,将产生空间数据渲染不一致的问题.通过对ArcGIS要素渲染数据的分析,将渲染数据分解后转换为可与空间数据共同存储的数据,实现了渲染数据与空间数据的共同存储和使用,解决了在多客户端访问同一ArcGIS数据时渲染方式不一致的问题.并给出了,NET平台下,以Oracle为数据库、C#为开发语言的实现方法.%In network application environment of ArcGIS, the spatial data and rendering data of map elements are stored separately.Spatial data is stored in geographic spatial database,while rendering data is stored in file format.So,when displaying the same ArcGIS spatial data on multi-clients' terminal,it will cause problem of rendering inconsistency in spatial data.Through the analysis on rendering data of ArcGIS elements,it is found that by decomposing the rendering data and then transmitting it to the data format which can be stored together with spatial data, the common storage and use of rendering data and spatial data are realised, this solves the problem of rendering inconsistency when multi-client access to same ArcGIS data.It also provides an implementation method which is on.NET platform and uses Oracle as database and C#as development language.