百度MapVGL显示普通点图—不同颜色大小点

<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="utf-8">
    <title>MapVGL</title>
    <meta http-equiv="X-UA-Compatible" content="IE=Edge">
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no">
    <style>
    html,
    body {
        width: 100%;
        height: 100%;
        margin: 0;
        padding: 0;
    }
    #map_container {
        width: 100%;
        height: 100%;
        margin: 0;
    }
    </style>
    <script src="//api.map.baidu.com/api?v=1.0&type=webgl&ak=1XjLLEhZhQNUzd93EjU5nOGQ"></script>
    <script src="static/common.js"></script>
    <script src="//mapv.baidu.com/build/mapv.min.js"></script>
    <script src="https://code.bdstatic.com/npm/mapvgl@1.0.0-beta.93/dist/mapvgl.min.js"></script>
</head>
<body>
    <div id="map_container"></div>
    <script>
    /* global BMapGL */

    /* global mapv */

    /* global mapvgl */

    /* global initMap */

    /* global whiteStyle */

    var map = initMap({
        tilt: 49.6,
        heading: 0,
        center: [103.438656,25.753594],
        zoom: 8,
        style: whiteStyle,
        skyColors: [
            // 地面颜色
            'rgba(226, 237, 248, 0)',
            // 天空颜色
            'rgba(186, 211, 252, 1)'
        ]
    });

    var data = [];

    var citys = [
        '北京', '天津', '上海', '重庆', '石家庄', '太原', '呼和浩特', '哈尔滨', '长春',
        '沈阳', '济南', '南京', '合肥', '杭州', '南昌', '福州', '郑州', '武汉', '长沙', '广州',
        '南宁', '西安', '银川', '兰州', '西宁', '乌鲁木齐', '成都', '贵阳', '昆明', '拉萨', '海口'
    ];

    var randomCount = 700;

    // 构造数据
    while (randomCount--) {
        var cityCenter = mapv.utilCityCenter.getCenterByCityName(citys[parseInt(Math.random() * citys.length, 10)]);
        data.push({
            geometry: {
                type: 'Point',
                coordinates: [cityCenter.lng - 2 + Math.random() * 4, cityCenter.lat - 2 + Math.random() * 4]
            },
            properties: {
                count: Math.random() * 100
            }
        });
    }

    var view = new mapvgl.View({
        map: map
    });

    var intensity = new mapvgl.Intensity({
        max: 100,
        min: 0,
        gradient: {
            0: 'rgb(25, 66, 102, 0.8)',
            0.3: 'rgb(145, 102, 129, 0.8)',
            0.7: 'rgb(210, 131, 137, 0.8)',
            1: 'rgb(248, 177, 149, 0.8)'

        },
        maxSize: 30,
        minSize: 5
    });

    var pointLayer = new mapvgl.PointLayer({
        // blend: 'lighter',
        size: function (data) {
            return intensity.getSize(data.properties.count);
        },
        color: function (data) {
            return intensity.getColor(data.properties.count);
        }
    });

    view.addLayer(pointLayer);
    pointLayer.setData(data);
    </script>
</body>
</html>
点此访问百度MapVGL显示普通点图—不同颜色大小点