Question

我无法使用Google地图上该区域的邮政编码绘制区域的多边形（边界）。我们如何获得邮政编码边界的所有经度和纬度来绘制该区域的边界。例如，如果我想使用孟买的邮政编码绘制孟买的边界。请帮忙。

Answer 1

以下是构建此内容的快速指南。有关详细信息use this link。要查看它是如何工作的，拖动点并在下面滚动以查看多边形点的精确坐标。

function initialize() {
  var myLatLng = new google.maps.LatLng(28.991625, 77.706587);
  var mapOptions = {
    zoom: 6,
    center: myLatLng,
    mapTypeId: google.maps.MapTypeId.RoadMap
  };

  var map = new google.maps.Map(document.getElementById('map-canvas'),
    mapOptions);
  var triangleCoords = [
    new google.maps.LatLng(28.525416, 79.870605),
    new google.maps.LatLng(27.190518, 77.530518),
    new google.maps.LatLng(29.013807, 77.67334)

  ];
  // Construct the polygon 
  bermudaTriangle = new google.maps.Polygon({
    paths: triangleCoords,
    draggable: true,
    editable: true,
    strokeColor: '#FF0000',
    strokeOpacity: 0.8,
    strokeWeight: 2,
    fillColor: '#FF0000',
    fillOpacity: 0.35
  });

  bermudaTriangle.setMap(map);
  google.maps.event.addListener(bermudaTriangle, "dragend", getPolygonCoords);
  google.maps.event.addListener(bermudaTriangle.getPath(), "insert_at", getPolygonCoords);
  google.maps.event.addListener(bermudaTriangle.getPath(), "remove_at", getPolygonCoords);
  google.maps.event.addListener(bermudaTriangle.getPath(), "set_at", getPolygonCoords);
}

function getPolygonCoords() {
  var len = bermudaTriangle.getPath().getLength();
  var htmlStr = "";
  for (var i = 0; i < len; i++) {
    htmlStr += bermudaTriangle.getPath().getAt(i).toUrlValue(5) + "<br>";
  }
  document.getElementById('info').innerHTML = htmlStr;
}

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>

<head>
  <title>Get Latitude and Longitude Coordinates of a Polygon - Google Maps API v3</title>
  <script type="text/javascript" src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false"></script>

</head>

<body onload="initialize()">
  <div id="map-canvas" style="height: 350px; width: auto;">
  </div>
  <div id="info" style="position: absolute; font-family: Arial; font-size: 14px;">
  </div>
</body>

</html>

如何使用区域的邮政编码在谷歌地图上绘制多边形？

1 个答案: