epsg

The European Petroleum Survey Group ( EPSG ) has a huge set of predefined spatial references , each given a unique ID.

欧洲石油勘测团体（EPSG）定义了一大批空间参考，每个都有一个唯一的ID。

To the bottom of the file / usr / share / proj / epsg on your web server .

添加到您web服务器上文件/usr/share/proj/epsg的底部。

Key points include setting the projection of the map file to EPSG : 4326 and defining the WMS layer you want to pull in along with its appropriate metadata ( the LAYER section ) .

关键的几点是：将地图文件的投影设为EPSG：4326以及定义想要拉入的WMS层及其相应的元数据（LAYER部分）。

You then project ( or transform ) the coordinate from WGS84 latitude and longitude ( EPSG : 4326 ) to the map 's current projection ( Spherical Mercator ) and zoom to it .

之后就可以将坐标从WGS84纬度和经度（EPSG：4326）投影（或转变）到地图的当前投影（SphericalMercator）并缩放到它。