无法加载 geojson 文件

Question

我正在尝试在我的地图上加载 geoJson 文件，但它不起作用。
这是我的代码：

{
  "type": "Feature",
  "geometry": {
    "type": "Polygon",
    "coordinates": [
      [
        [57.089460, -2.082101],
        [56.744047, -2.464766],
        [56.977826, -2.720955],
        [57.089460, -2.082101]
      ]
    ]
  }
}

在初始化函数中：

var mapCanvas = document.getElementById('map');
var mapOptions = {
   center: new google.maps.LatLng(56.975012, -2.343829),
   zoom: 9,
   mapTypeId: google.maps.MapTypeId.ROADMAP
}
var map = new google.maps.Map(mapCanvas, mapOptions);

var localLayer = new google.maps.Data();
localLayer.loadGeoJson('js/coordinates.json');
localLayer.setMap(map);

如果你看到错误，请告诉我我做错了什么。（我的 json 文件的路径是正确的）

Answer 1

特征对象必须有一个名为 "properties".feature-objects.

的成员

因此它可以为 null，您可以将 "properties":null 添加到您的特征对象。

Answer 2

如果我运行你的geoJSON通过geojsonlint.com，它是无效的：

Invalid GeoJSON Line 1: "properties" property required

这验证了（但坐标是向后的）：

{
  "type": "Feature",
"properties": {},
  "geometry": {
    "type": "Polygon",
    "coordinates": [
      [
        [57.089460, -2.082101],
        [56.744047, -2.464766],
        [56.977826, -2.720955],
        [57.089460, -2.082101]
      ]
    ]
  }
};

修正坐标：

proof of concept fiddle

代码片段：

function initialize() {
  var mapCanvas = document.getElementById('map');
  var mapOptions = {
    center: new google.maps.LatLng(56.975012, -2.343829),
    zoom: 9,
    mapTypeId: google.maps.MapTypeId.ROADMAP
  }
  var map = new google.maps.Map(mapCanvas, mapOptions);

  var localLayer = new google.maps.Data();
  localLayer.addGeoJson(geoJson);
  localLayer.setMap(map);
}
google.maps.event.addDomListener(window, "load", initialize);
var geoJson = {
  "type": "Feature",
  "properties": {},
  "geometry": {
    "type": "Polygon",
    "coordinates": [
      [
        [-2.082101, 57.089460],
        [-2.464766, 56.744047],
        [-2.720955, 56.977826],
        [-2.082101, 57.089460]
      ]
    ]
  }
};

html,
body,
#map {
  height: 100%;
  width: 100%;
  margin: 0px;
  padding: 0px
}

<script src="https://maps.googleapis.com/maps/api/js"></script>
<div id="map"></div>

无法加载 geojson 文件

Can't load geojson file

javascript

google-maps

geojson