Web瓦片地图在MapGIS中自动显示研究

Research on Automatic Display of Web TileMap in MapGIS

Web地图因在其现势性、覆盖范围、详略层次等方面优越性明显,在专题地图生产中得到了认可,但专题地图生产对其方便、灵活使用提出了新的要求。为解决这个问题,本文着重研究了Web地图瓦片在MapGIS专题地图生产中研究显示方法,通过地图瓦片图幅计算、拼接、投影变换与显示等处理,实现了地图瓦片在MapGIS中与专题地图快速动态叠加显示。

Web map data have extensively been used in thematic map production because of its obvious superiority in its dependabili- ty, scope of the map, and level of detail. In current condition. But the map display, projection transformation, coordinate calculation of web tilemap can＇ t conveniently and flexibly be realizated in the production of the thematic map. In order to solve the problem, this paper focuses on the research of the display approach of web tilemap in MapGIS for thematic map production, and realizes the dynamic display of the tilemap through tiles map calculating, merging, projection transformation and so on.