test/violin.html - master - githubmirror/echarts

test/violin.html
207 строк8 KB
Ovilia
test: add violin demo
31 июл 2024, 14:53
31 июл 2024, 14:53e9fdf5f
<!DOCTYPE html>
<!--
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to you under the Apache License, Version 2.0 (the
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   http://www.apache.org/licenses/LICENSE-2.0

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<html>
    <head>
        <meta charset="utf-8">
        <meta name="viewport" content="width=device-width, initial-scale=1" />
        <script src="lib/simpleRequire.js"></script>
        <script src="lib/config.js"></script>
        <script src="lib/jquery.min.js"></script>
        <script src="lib/facePrint.js"></script>
        <script src="lib/testHelper.js"></script>
        <!-- <script src="ut/lib/canteen.js"></script> -->
        <link rel="stylesheet" href="lib/reset.css" />
    </head>
    <body>
        <style>
        </style>



        <div id="main0"></div>






        <script>
        require([
            'echarts'
        ], function (echarts) {
            function epanechnikovKernel(u) {
                return Math.abs(u) <= 1 ? 0.75 * (1 - u * u) : 0;
            }

            function kernelDensityEstimator(kernel, bandwidth, data) {
                return function(x) {
                    let sum = 0;
                    for (let i = 0; i < data.length; i++) {
                        sum += kernel((x - data[i]) / bandwidth);
                    }
                    return sum / (data.length * bandwidth);
                };
            }

            const grid = {
                left: 80,
                right: 50
            };
            const width = window.innerWidth - grid.left - grid.right;
            const xData = ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'];
            const bandWidth = width / xData.length;
            const yMax = 10;
            const data = [];
            const dataCount = 100;
            for (let day = 0; day < xData.length; ++day) {
                for (let i = 0; i < dataCount; ++i) {
                    const y = Math.tan(i) / 2 + 3 * Math.random() + 2;
                    data.push([day, y, 0]);
                }
            }

            const violinData = [];
            for (let i = 0; i < data.length; ++i) {
                const x = data[i][0];
                if (!violinData[x]) {
                    violinData[x] = [];
                }
                violinData[x].push(data[i][1]);
            }

            option = {
                title: {
                    text: 'Scatter with Jittering'
                },
                grid,
                xAxis: {
                    type: 'category',
                    jitter: bandWidth * 0.8,
                    jitterOverlap: false,
                    data: xData
                },
                yAxis: {
                    type: 'value',
                    max: yMax,
                    min: 0
                },
                series: [
                    {
                        type: 'custom',
                        data: violinData,
                        renderItem: (params, api) => {
                            const rawData = [];
                            for (let i = 0; i < dataCount; ++i) {
                                rawData.push(api.value(i));
                            }
                            const kde = kernelDensityEstimator(epanechnikovKernel, 1, rawData);
                            const xRange = [...Array(100).keys()].map(x => x * (10 / 99));
                            const density = xRange.map(x => [x, kde(x)]);
                            const x = api.coord([
                                params.dataIndex,
                                0
                            ])[0];

                            const epsilonDensity = 0.001;
                            const polylines = [];
                            const points = [];
                            for (let i = 0; i < density.length; ++i) {
                                const coord = api.coord([
                                    params.dataIndex,
                                    density[i][0]
                                ]);
                                if (density[i][1] < epsilonDensity) {
                                    if (points.length > 1) {
                                        for (let j = points.length - 1; j >= 0; --j) {
                                            points.push([
                                                x * 2 - points[j][0],
                                                points[j][1]
                                            ]);
                                        }
                                        polylines.push({
                                            type: 'polygon',
                                            shape: {
                                                points: points.slice()
                                            },
                                            style: api.style()
                                        });
                                    }
                                    points.length = 0;
                                    continue;
                                }

                                points.push([
                                    coord[0] + bandWidth / 2 * density[i][1],
                                    coord[1]
                                ]);
                            }
                            if (points.length > 1) {
                                for (let j = points.length - 1; j >= 0; --j) {
                                    points.push([
                                        x * 2 - points[j][0],
                                        points[j][1]
                                    ]);
                                }
                                polylines.push({
                                    type: 'polygon',
                                    shape: {
                                        points: points.slice()
                                    },
                                    style: api.style()
                                });
                            }
                            return {
                                type: 'group',
                                children: polylines
                            }
                        },
                        colorBy: 'data',
                        itemStyle: {
                            opacity: 0.6
                        }
                    },
                    {
                        name: 'Sleeping Hours',
                        type: 'scatter',
                        data: data,
                        colorBy: 'data',
                        itemStyle: {
                            opacity: 0.8
                        },
                        symbolSize: 5
                    }
                ]
            };

            const chart = testHelper.create(echarts, 'main0', {
                title: [
                    'Test Case Description of main0',
                    '(Muliple lines and **emphasis** are supported in description)'
                ],
                option: option
            });
        });
        </script>


    </body>
</html>