PDA终端嵌入式GIS地图的显示

本文探讨了基于PDA终端嵌入式GIS的地图显示方法。针对移动信息设备的硬件局限性,提出了在地图显示过程中减少系统硬件负担的方法,根据不同的图形类型,提出了各自的显示方法,同时解决了复杂多边形的填充和显示问题。本研究应用于常州市国土资源野外巡查实验结果表明:基本满足实际应用需求,能有效实现移动终端硬件局限下的地图快速显示,为国土资源三级综合动态巡查提供技术支持。

Map displaying of PDA mobile information devices embedded GIS

Aiming at the constraints of hardware,this paper gave methods to solve the problems of map displaying,which avoided mass use of system resources.And particularly the problem in drawing complex polygons was solved in this paper.This study was used in the Changzhou Land Use Three-level Visitation System,the experimental results showed that the study could basically meet the practical needs,and the map could quickly show under the burden of the hardware limitations in the mobile terminal,this study would support for the Changzhou land use three-level visitation system by technical support.