proj4js
作者：互联网
proj4js：Proj4js is a JavaScript library to transform point coordinates from one coordinate system to another.
openlayers是用proj4js做投影转换的吗？是用它来加载UTM切片的吗？
>>Supermap iClient for OpenLayers(using proj4js)：https://blog.csdn.net/supermapsupport/article/details/89306219
https://blog.csdn.net/supermapsupport/article/details/78952736
标签：proj4js,blog,details,https,article,supermapsupport 来源： https://www.cnblogs.com/2008nmj/p/15263173.html