arrays - 获取数组数据（线段）以映射 multiLine openlayers 3

Question

我是 OL 的初学者，但我需要解决这个问题......我想把这个数组放到我的 map 中。谢谢帮忙！;) 我的数组 ces 的片段： ["1192.4692,1107.0745","1190.5201,1107.0029","1190.5201,1101.8436","1190.5201,1098.0733", "1192.4162,1097.9464"]

var LineSource = new ol.source.Vector({
    projection: 'EPSG:3857',
    format: new ol.format.Feature(LineFeat)
});
var LineFeat = new ol.Feature( { 
    name: "krLine",
    geometry: new ol.geom.MultiLineString(ces), });


LineSource.addFeature( LineFeat );

var krLineLayer = new ol.layer.Vector({
          source: LineSource,
          projection: 'EPSG:3857',
      });

这是我的地图：

var map = new ol.Map({
 layers: [
      krLineLayer,
      ],
 target: 'map',
 controls: [
     new ol.control.ScaleLine(),
     new ol.control.MousePosition({
       coordinateFormat: ol.coordinate.createStringXY(3),    
     })
     ],
 view: mapView
});

这是@Mikelis 的解决方案和一个示例，我如何将线条放入我的地图：

    var elem;
var arr2 = [];
for (var i=0; i<ces.length; i++){
   elem = ces[i].split(",");
   arr2.push([parseFloat(elem[0]), parseFloat(elem[1])]);
}

console.log(arr2);

var layerLines = new ol.layer.Vector({
      source: new ol.source.Vector({
          features: [new ol.Feature({
              geometry: new ol.geom.LineString(arr2),
              name: 'Line',
              projection: 'EPSG:3857'
          })]
      }),
  });

Answer 1

您已经有一组对。取该数组的每个元素，用split(","). 这给了你一个array[2]字符串。然后将每个字符串转换为数字并粘贴到新数组中array[2]。经测试。

var arr = ["1192.4692,1107.0745","1190.5201,1107.0029","1190.5201,1101.8436","1190.5201,1098.0733", "1192.4162,1097.9464"];
var elem;
var arr2 = [];
for (var i=0; i<arr.length; i++){
   elem = arr[i].split(",");
   arr2.push([parseFloat(elem[0]), parseFloat(elem[1])]);
}