線 <p>我如何繪製它們之間的線是否有任何方式在openlayers中做到這一點，我曾嘗試使用矢量圖層中的線串做它，但它似乎並沒有爲我工作。</p>

Question

我有具有lolLat爲0,10和30,0

現在，在這一點上，我使用該變換而它

lonLat.transform(
       new OpenLayers.Projection("EPSG:4326"), // transform from WGS 1984 
       map.getProjectionObject() // to Spherical Mercator Projection 
      ) 

生成標記繪製一個標記的兩個點的兩個點之間繪製

Answer 1

例如：

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]); 

Live demo

Answer 2

在的OpenLayers 3.3的版本，你可以這樣做，因爲

var points = [ [-89.8802, 32.5804], [-95.04286, 46.9235] ]; 

for (var i = 0; i < points.length; i++) { 
    points[i] = ol.proj.transform(points[i], 'EPSG:4326', 'EPSG:3857'); 
} 

var featureLine = new ol.Feature({ 
    geometry: new ol.geom.LineString(points) 
}); 

var vectorLine = new ol.source.Vector({}); 
vectorLine.addFeature(featureLine); 

var vectorLineLayer = new ol.layer.Vector({ 
    source: vectorLine, 
    style: new ol.style.Style({ 
     fill: new ol.style.Fill({ color: '#00FF00', weight: 4 }), 
     stroke: new ol.style.Stroke({ color: '#00FF00', width: 2 }) 
    }) 
}); 

然後加層映射

map.addLayer(vectorLineLayer);