更改热图上单个点的半径？答案

【问题标题】：Change radius for a single point on Heatmap?更改热图上单个点的半径？
【发布时间】：2015-07-19 03:29:21
【问题描述】：

这是在 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 Heatmap 上的单个源（点）指定不同的半径？

【问题讨论】：

你可以制作不同的“数据”数组并分配不同的半径吗？
那行不通，因为最初它希望 radius 在热图配置中

标签： javascript google-maps google-maps-api-3 maps heatmap

【解决方案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 = 新的 google.maps.visualization.HeatmapLayer1({ 数据：数据1，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 = 新的 google.maps.visualization.HeatmapLayer2({ 数据：数据2，半径：3 });

【讨论】：

我想问题是改变每个点的半径，而不仅仅是为此创建大量地图......

【解决方案2】：

好吧，你可以从配置中删除半径！

例子：

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

【讨论】：