在OpenLayers Map中更改投影 [英] Change Projection in OpenLayers Map

问题描述

我想将EPSG：4326设置为OpenLayers地图的投影，但是当我尝试时，我总是得到EPSG：900913。

I want to set "EPSG:4326" as the projection of an OpenLayers map, but when I try it, I always get "EPSG:900913".

function init() {

    var options = {
            projection: new OpenLayers.Projection("EPSG:4326")  // ignored
    };

    map = new OpenLayers.Map('map', options);

    var layer = new OpenLayers.Layer.OSM.Osmarender("Osmarender");
    map.addLayer(layer);

    ...

    alert(map.getProjection());  // returns "EPSG:900913"

    ...

}

基本地图是开放的街道地图。

The base map is open street map.

如何将投影设置为EPSG：4326？

How can I set the Projection to EPSG:4326?

推荐答案

Osmarender有一个硬编码的900913投影，与此无关。但你有没有考虑过相反的事情？将坐标或图层转换为EPSG：900913？请查看此处的文档： http://docs.openlayers.org/library/spherical_mercator.html

It is Osmarender that has a hardcoded 900913 projection, nothing to do about that. But have you considered taking things the other way around? Transforming your coordinates or layer to EPSG:900913? Check the documentation here: http://docs.openlayers.org/library/spherical_mercator.html

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