ECharts 5 使用外部的数据转换器 echarts-stat 简单聚类 (Clustering) 实例

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    <meta charset="utf-8" />
    <title>ECharts 5 使用外部的数据转换器 echarts-stat 简单聚类 (Clustering) 实例</title>
    
    <script src="https://cdn.staticfile.org/echarts/5.4.3/echarts.min.js"></script>
    <script src="https://demo.runoops.com/static/lib/echarts-stat/ecStat.min.js"></script>
</head>

// 基于准备好的dom，初始化echarts实例
        var myChart = echarts.init(document.getElementById('main'));

var option;

// See https://github.com/ecomfe/echarts-stat
        echarts.registerTransform(ecStat.transform.clustering);
        const data = [
            [3.275154, 2.957587],
            [-3.344465, 2.603513],
            [0.355083, -3.376585],
            [1.852435, 3.547351],
            [-2.078973, 2.552013],
            [-0.993756, -0.884433],
            [2.682252, 4.007573],
            [-3.087776, 2.878713],
            [-1.565978, -1.256985],
            [2.441611, 0.444826],
            [-0.659487, 3.111284],
            [-0.459601, -2.618005],
            [2.17768, 2.387793],
            [-2.920969, 2.917485],
            [-0.028814, -4.168078],
            [3.625746, 2.119041],
            [-3.912363, 1.325108],
            [-0.551694, -2.814223],
            [2.855808, 3.483301],
            [-3.594448, 2.856651],
            [0.421993, -2.372646],
            [1.650821, 3.407572],
            [-2.082902, 3.384412],
            [-0.718809, -2.492514],
            [4.513623, 3.841029],
            [-4.822011, 4.607049],
            [-0.656297, -1.449872],
            [1.919901, 4.439368],
            [-3.287749, 3.918836],
            [-1.576936, -2.977622],
            [3.598143, 1.97597],
            [-3.977329, 4.900932],
            [-1.79108, -2.184517],
            [3.914654, 3.559303],
            [-1.910108, 4.166946],
            [-1.226597, -3.317889],
            [1.148946, 3.345138],
            [-2.113864, 3.548172],
            [0.845762, -3.589788],
            [2.629062, 3.535831],
            [-1.640717, 2.990517],
            [-1.881012, -2.485405],
            [4.606999, 3.510312],
            [-4.366462, 4.023316],
            [0.765015, -3.00127],
            [3.121904, 2.173988],
            [-4.025139, 4.65231],
            [-0.559558, -3.840539],
            [4.376754, 4.863579],
            [-1.874308, 4.032237],
            [-0.089337, -3.026809],
            [3.997787, 2.518662],
            [-3.082978, 2.884822],
            [0.845235, -3.454465],
            [1.327224, 3.358778],
            [-2.889949, 3.596178],
            [-0.966018, -2.839827],
            [2.960769, 3.079555],
            [-3.275518, 1.577068],
            [0.639276, -3.41284]
        ];
        var CLUSTER_COUNT = 6;
        var DIENSIION_CLUSTER_INDEX = 2;
        var COLOR_ALL = [
            '#37A2DA',
            '#e06343',
            '#37a354',
            '#b55dba',
            '#b5bd48',
            '#8378EA',
            '#96BFFF'
        ];
        var pieces = [];
        for (var i = 0; i < CLUSTER_COUNT; i++) {
            pieces.push({
                value: i,
                label: 'cluster ' + i,
                color: COLOR_ALL[i]
            });
        }
        option = {
            dataset: [
                {
                    source: data
                },
                {
                    transform: {
                        type: 'ecStat:clustering',
                        // print: true,
                        config: {
                            clusterCount: CLUSTER_COUNT,
                            outputType: 'single',
                            outputClusterIndexDimension: DIENSIION_CLUSTER_INDEX
                        }
                    }
                }
            ],
            tooltip: {
                position: 'top'
            },
            visualMap: {
                type: 'piecewise',
                top: 'middle',
                min: 0,
                max: CLUSTER_COUNT,
                left: 10,
                splitNumber: CLUSTER_COUNT,
                dimension: DIENSIION_CLUSTER_INDEX,
                pieces: pieces
            },
            grid: {
                left: 120
            },
            xAxis: {},
            yAxis: {},
            series: {
                type: 'scatter',
                encode: { tooltip: [0, 1] },
                symbolSize: 15,
                itemStyle: {
                    borderColor: '#555'
                },
                datasetIndex: 1
            }
        };

option && myChart.setOption(option);
    </script>
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