可视化例子(1)——Mapbox-bar3D(3D地图柱状图)

最新推荐文章于 2025-06-18 13:37:30 发布

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最新推荐文章于 2025-06-18 13:37:30 发布

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分类专栏： Mapbox WebGL Echarts 文章标签： Mapbox-bar3D JavaScript

本文链接：https://blog.youkuaiyun.com/Ocean111best/article/details/103209577

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本文介绍如何使用Mapbox和Echarts实现3D地图上的柱状图展示，包括底图选择、数据加载、样式设置及交互效果实现。

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一、效果图

二、底图说明

底图使用的是 Mapbox 地图，当调用时首先需要使用accessToken（可以在 Mapbox 官网免费申请）

mapboxgl.accessToken = '你的accessToken'

mapbox地图模板样式：

mapbox://styles/mapbox/streets-v10

mapbox://styles/mapbox/outdoors-v10

mapbox://styles/mapbox/light-v9

mapbox://styles/mapbox/dark-v9

mapbox://styles/mapbox/satellite-v9

mapbox://styles/mapbox/satellite-streets-v10

mapbox://styles/mapbox/navigation-preview-day-v2

mapbox://styles/mapbox/navigation-preview-night-v2

mapbox://styles/mapbox/navigation-guidance-day-v2

mapbox://styles/mapbox/navigation-guidance-night-v2

三、数据格式

数据以“[[精度，维度，柱子高度],[精度，维度，柱子高度],[精度，维度，柱子高度]...]”这样的形式存储在Json文件中，通过Filter函数存储到 data 里面：

$.getJSON('./data/population.json', function (data) {
                data = data.filter(function (dataItem) {
                    return dataItem[2] > 0;
                }).map(function (dataItem) {
                    return [dataItem[0], dataItem[1], dataItem[2]];
                });
});

四、完整代码

<!doctype html>
<html>
    <head>
        <meta charset="utf-8">
        <title>3D地图柱状图-mapbox</title>
        <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
        <meta name="apple-mobile-web-app-capable" content="yes"> <!-- Fullscreen Landscape on iOS -->
        <link rel="stylesheet" href="./common.css">
    </head>
    <body>
        <div id="main"></div>
        <script src="../node_modules/echarts/dist/echarts.js"></script>
        <script src="../dist/echarts-gl.js"></script>
        <script src='lib/mapbox-gl.js'></script>
        <link href='lib/mapbox-gl.css' rel='stylesheet' />
        <script src="lib/jquery.min.js"></script>
        <script src="./data/capitals.js"></script>
        <script src="js/commonUI.js"></script>
        <script>
            mapboxgl.accessToken = '你的accessToken';
            var chart = echarts.init(document.getElementById('main'));

            $.getJSON('./data/population.json', function (data) {

                data = data.filter(function (dataItem) {
                    return dataItem[2] > 0;
                }).map(function (dataItem) {
                    return [dataItem[0], dataItem[1], dataItem[2]];
                });

                chart.setOption({
                    visualMap: {
                        show: false,
                        max: 1000,
                        calculable: true,
                        realtime: false,
                        inRange: {
                            color: ['#313695', '#4575b4', '#74add1', '#abd9e9', '#e0f3f8', '#ffffbf', '#fee090', '#fdae61', '#f46d43', '#d73027', '#a50026']
                        },
                        outOfRange: {
                            colorAlpha: 0
                        }
                    },
                    mapbox3D: {
                        center: [104.114129, 37.550339],
                        zoom: 2,
                        pitch: 50,
                        bearing: -10,
                        style: 'mapbox://styles/mapbox/light-v9',
                        boxHeight: 50,
                        // altitudeScale: 1e2,
                        postEffect: {
                            enable: true,
                            screenSpaceAmbientOcclusion: {
                                enable: true,
                                radius: 2
                            }
                        },
                        light: {
                            main: {
                                intensity: 2,
                                shadow: true,
                                shadowQuality: 'high'
                            },
                            ambient: {
                                intensity: 0.
                            },
                            ambientCubemap: {
                                texture: 'asset/canyon.hdr',
                                exposure: 2,
                                diffuseIntensity: 0.5
                            }
                        }
                    },
                    series: [{
                        type: 'bar3D',
                        coordinateSystem: 'mapbox3D',
                        shading: 'lambert',
                        minHeight: 0.1,
                        barSize: 0.1,
                        data: data,
                        silent: true,
                        animationEasingUpdate: 2000
                    }]
                });

                var mapbox = chart.getModel().getComponent('mapbox3D').getMapbox();
                var cities = [
                    'Beijing',
                    'Washington',
                    'Berlin',
                    'Tokyo',
                    'London',
                    'New Delhi',
                    'Canberra',
                    'Paris'
                ]
                var current = 0;
                function flyToNextCity() {
                    // var idx = Math.round(Math.random() * (cities.length - 1));
                    var name = cities[current];
                    var city = capitals.find(function (item) {
                        return item.CapitalName === name;
                    });

                    if (isNaN(city.CapitalLatitude) || isNaN(city.CapitalLongitude)) {
                        debugger;
                    }
                    mapbox.flyTo({
                        center: [city.CapitalLongitude, city.CapitalLatitude],
                        zoom: 5,
                        speed: 0.4,
                        curve: 2
                    });
                    current = (current + 1) % (cities.length - 1);
                }

                window.addEventListener('keydown', function (e) {
                    if (e.keyCode === 32) {
                        flyToNextCity();
                    }
                })
            });

            window.addEventListener('resize', function () {
                chart.resize();
            });

        </script>
    </body>
</html>