Question

以下是在Google Maps Api中创建热图图层的方法：

var data = [
        {location: new google.maps.LatLng(59.4072, 24.7053),weight:0.8},
        {location: new google.maps.LatLng(59.4372, 24.7473),weight: 1},
        {location: new google.maps.LatLng(59.4372, 24.7493),weight:0.8},
        {location: new google.maps.LatLng(59.483428, 24.841709),weight: 0.6},
        {location: new google.maps.LatLng(59.483256, 24.846666),weight: 0.2},
        {location: new google.maps.LatLng(59.409425, 27.278345),weight: 0.3}
    ];

heatmap = new google.maps.visualization.HeatmapLayer({
    data: data,
    radius: 10
});

如您所见，您必须在Heatmap配置中指定半径 但是如何为热图上的单个来源（点）指定不同的半径？

Answer 1

理论上你可以制作多个热图图层 https://github.com/pa7/heatmap.js/issues/96#issuecomment-272202758

var data1 = [
    {location: new google.maps.LatLng(59.4072, 24.7053),weight:0.8},
    {location: new google.maps.LatLng(59.4372, 24.7473),weight: 1},
    {location: new google.maps.LatLng(59.4372, 24.7493),weight:0.8},
    {location: new google.maps.LatLng(59.483428, 24.841709),weight: 0.6},
    {location: new google.maps.LatLng(59.483256, 24.846666),weight: 0.2},
    {location: new google.maps.LatLng(59.409425, 27.278345),weight: 0.3}
];

heatmap1 = new google.maps.visualization.HeatmapLayer1（{ 数据：data1，半径：10 }）;

var data2 = [
    {location: new google.maps.LatLng(59.4072, 24.7053),weight:0.8},
    {location: new google.maps.LatLng(59.4372, 24.7473),weight: 1},
    {location: new google.maps.LatLng(59.4372, 24.7493),weight:0.8},
    {location: new google.maps.LatLng(59.483428, 24.841709),weight: 0.6},
    {location: new google.maps.LatLng(59.483256, 24.846666),weight: 0.2},
    {location: new google.maps.LatLng(59.409425, 27.278345),weight: 0.3}
];

heatmap2 = new google.maps.visualization.HeatmapLayer2（{ 数据：data2，半径：3 }）;

Answer 2

好吧，您可以从配置中删除半径！

示例：

var heatMapData = [
  {location: new google.maps.LatLng(37.782, -122.447), weight: 0.5},
  {location: new google.maps.LatLng(37.782, -122.443), weight: 2}
];

heatmap = new google.maps.visualization.HeatmapLayer({
    data: heatMapData
});

您可以找到如何自定义热图图层 > here <

更改Heatmap上单个点的半径？

2 个答案: