Normal Distribution 2Decharts scatter配置项内容和展示

      function normalDist(theta, x) {
    return 1 / (theta * Math.sqrt(2 * Math.PI)) * Math.exp(- x * x / 2 / theta / theta);
}

function generateData(theta, min, max) {
    var data = [];
    for (var i = 0; i <= 20; i++) {
        for (var j = 0; j <= 20; j++) {
            var x = (max - min) * i / 20 + min;
            var y = (max - min) * j / 20 + min;
            data.push([x, y, normalDist(theta, x) * normalDist(theta, y)]);
        }
    }
    return data;
}

option = {
    xAxis: {
        type: 'value',
        min: -5,
        max: 5,
        interval: 1
    },
    yAxis: {
        type: 'value',
        min: -5,
        max: 5,
        interval: 1
    },
    visualMap: {
        show: false,
        min: 0,
        max: 0.05,
        inRange: {
            color: ['#bf444c', '#d88273', '#f6efa6'],
            symbolSize: [3, 40]
        }
    },
    series: [
        {
            type: 'scatter',
            data: generateData(2, -5, 5),
            itemStyle: {
                normal: {
                    opacity: 1
                }
            }
        }
    ]
};