电子地图显示范围控制的方法探讨  

Discussion on the Method of Display Range Control for Electronic Map

作　　者：刘畅[1] 邵楠[1] Liu Chang;Shao Nan(Shenyang Geotechnical Investigation & Surveying Research Institute Co.,Ltd.,Shengyang 110000,China)

机构地区：[1]沈阳市勘察测绘研究院有限公司,辽宁沈阳110000

出　　处：《城市勘测》2021年第4期54-56,共3页Urban Geotechnical Investigation & Surveying

摘　　要：在城市自然资源管理信息化建设中,不同管辖级别的用户应具备不同的数据浏览、管理的权限,为了实现用户使用电子地图时的范围控制,对多种电子地图显示范围控制方法进行了研究分析,并在实践中设计了一种“CSS不规则遮罩”的控制方法,总结了各类方法的优劣和使用场景,为电子地图权限的应用提供借鉴与参考。In the Information construction of urban natural resource management,users which have different jurisdiction levels should have different data browsing and management permissions.In order to achieve range control when users operate electronic maps,lots of electronic map display range control methods have been researched and analyzed.At the same time,this paper designed a“CSS irregular mask control method”in practice.Finally,this paper summarized the pros and cons of these methods and scenarios they should use.The conclusion can provide reference for the application of electronic map permissions.

关 键 词：电子地图 范围控制 权限 

分 类 号：P208.1[天文地球—地图制图学与地理信息工程]