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要画两个点之间的直线OSM地图我如何绘制两点之间的直线OSM
map = new OpenLayers.Map();
var start_point = new OpenLayers.Geometry.Point(0,10);
var end_point = new OpenLayers.Geometry.Point(30,0);
var vector = new OpenLayers.Layer.Vector();
vector.addFeatures([new OpenLayers.Feature.Vector(new OpenLayers.Geometry.LineString([start_point, end_point]))]);
map.addLayers([vector]);
我试试这个代码,但它没有工作,所以请帮助我。