ECharts 5 使用外部的数据转换器 echarts-stat 对数回归线 (Logarithmic Regression) 实例

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<head>
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    <title>ECharts 5 使用外部的数据转换器 echarts-stat 对数回归线 (Logarithmic Regression) 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>

<body>
    
    <div id="main" style="width: 800px;height:600px;"></div>
    <script type="text/javascript">
        
        // 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.regression);
        option = {
            dataset: [
                {
                    source: [
                        [28604, 77, 17096869, 'Australia', 1990],
                        [31163, 77.4, 27662440, 'Canada', 1990],
                        [1516, 68, 1154605773, 'China', 1990],
                        [13670, 74.7, 10582082, 'Cuba', 1990],
                        [28599, 75, 4986705, 'Finland', 1990],
                        [29476, 77.1, 56943299, 'France', 1990],
                        [31476, 75.4, 78958237, 'Germany', 1990],
                        [28666, 78.1, 254830, 'Iceland', 1990],
                        [1777, 57.7, 870601776, 'India', 1990],
                        [29550, 79.1, 122249285, 'Japan', 1990],
                        [2076, 67.9, 20194354, 'North Korea', 1990],
                        [12087, 72, 42972254, 'South Korea', 1990],
                        [24021, 75.4, 3397534, 'New Zealand', 1990],
                        [43296, 76.8, 4240375, 'Norway', 1990],
                        [10088, 70.8, 38195258, 'Poland', 1990],
                        [19349, 69.6, 147568552, 'Russia', 1990],
                        [10670, 67.3, 53994605, 'Turkey', 1990],
                        [26424, 75.7, 57110117, 'United Kingdom', 1990],
                        [37062, 75.4, 252847810, 'United States', 1990],
                        [44056, 81.8, 23968973, 'Australia', 2015],
                        [43294, 81.7, 35939927, 'Canada', 2015],
                        [13334, 76.9, 1376048943, 'China', 2015],
                        [21291, 78.5, 11389562, 'Cuba', 2015],
                        [38923, 80.8, 5503457, 'Finland', 2015],
                        [37599, 81.9, 64395345, 'France', 2015],
                        [44053, 81.1, 80688545, 'Germany', 2015],
                        [42182, 82.8, 329425, 'Iceland', 2015],
                        [5903, 66.8, 1311050527, 'India', 2015],
                        [36162, 83.5, 126573481, 'Japan', 2015],
                        [1390, 71.4, 25155317, 'North Korea', 2015],
                        [34644, 80.7, 50293439, 'South Korea', 2015],
                        [34186, 80.6, 4528526, 'New Zealand', 2015],
                        [64304, 81.6, 5210967, 'Norway', 2015],
                        [24787, 77.3, 38611794, 'Poland', 2015],
                        [23038, 73.13, 143456918, 'Russia', 2015],
                        [19360, 76.5, 78665830, 'Turkey', 2015],
                        [38225, 81.4, 64715810, 'United Kingdom', 2015],
                        [53354, 79.1, 321773631, 'United States', 2015]
                    ]
                },
                {
                    transform: {
                        type: 'filter',
                        config: { dimension: 4, eq: 1990 }
                    }
                },
                {
                    transform: {
                        type: 'filter',
                        config: { dimension: 4, eq: 2015 }
                    }
                },
                {
                    transform: {
                        type: 'ecStat:regression',
                        config: {
                            method: 'logarithmic'
                        }
                    }
                }
            ],
            title: {
                text: '1990 and 2015 per capita life expectancy and GDP',
                subtext: 'By ecStat.regression',
                sublink: 'https://github.com/ecomfe/echarts-stat',
                left: 'center'
            },
            legend: {
                data: ['1990', '2015'],
                bottom: 10
            },
            tooltip: {
                trigger: 'axis',
                axisPointer: {
                    type: 'cross'
                }
            },
            xAxis: {
                type: 'value',
                splitLine: {
                    lineStyle: {
                        type: 'dashed'
                    }
                }
            },
            yAxis: {
                type: 'value',
                splitLine: {
                    lineStyle: {
                        type: 'dashed'
                    }
                }
            },
            visualMap: {
                show: false,
                dimension: 2,
                min: 20000,
                max: 1500000000,
                seriesIndex: [0, 1],
                inRange: {
                    symbolSize: [10, 70]
                }
            },
            series: [
                {
                    name: '1990',
                    type: 'scatter',
                    datasetIndex: 1
                },
                {
                    name: '2015',
                    type: 'scatter',
                    datasetIndex: 2
                },
                {
                    name: 'line',
                    type: 'line',
                    smooth: true,
                    datasetIndex: 3,
                    symbolSize: 0.1,
                    symbol: 'circle',
                    label: { show: true, fontSize: 16 },
                    labelLayout: { dx: -20 },
                    encode: { label: 2, tooltip: 1 }
                }
            ]
        };

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