Echarts之Line[折线图]

最新推荐文章于 2023-07-20 16:33:39 发布

原创最新推荐文章于 2023-07-20 16:33:39 发布 · 2.6k 阅读

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#echarts #line #折线图 #通俗易懂

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本文介绍了一个使用ECharts实现的大数据量面积图示例。该示例通过生成20,000条模拟数据来展示如何在网页上绘制流畅且交互性强的面积图，并提供了完整的HTML代码及JavaScript配置选项。

<!DOCTYPE html>
<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>Gauge</title>
    <script src="~/js/jquery-3.2.1.js"></script>
    <script src="~/js/jquery-3.2.1.min.js"></script>
    <script src="~/js/echarts.js"></script>
</head>
<body>
    <div id="mydiv" style="height:500px;width:800px;">

    </div>
</body>
</html>
<script type="text/javascript">
    var mychart = echarts.init(document.getElementById('mydiv'));
    var base = +new Date(1968, 9, 3);
    var oneDay = 24 * 3600 * 1000;
    var date = [];

    var data = [Math.random() * 300];

    for (var i = 1; i < 20000; i++) {
        var now = new Date(base += oneDay);
        date.push([now.getFullYear(), now.getMonth() + 1, now.getDate()].join('/'));
        data.push(Math.round((Math.random() - 0.5) * 20 + data[i - 1]));
    }

    var option = {
        tooltip: {
            trigger: 'axis',
            position: function (pt) {
                return [pt[0], '10%'];
            }
        },
        title: {
            left: 'center',
            text: '大数据量面积图',
        },
        toolbox: {
            feature: {
                dataZoom: {
                    yAxisIndex: 'none'
                },
                restore: {},
                saveAsImage: {}
            }
        },
        xAxis: {
            type: 'category',
            boundaryGap: false,
            data: date
        },
        yAxis: {
            type: 'value',
            boundaryGap: [0, '100%']
        },
        dataZoom: [{
            type: 'inside',
            start: 0,
            end: 10
        }, {
            start: 0,
            end: 10,
            handleIcon: 'M10.7,11.9v-1.3H9.3v1.3c-4.9,0.3-8.8,4.4-8.8,9.4c0,5,3.9,9.1,8.8,9.4v1.3h1.3v-1.3c4.9-0.3,8.8-4.4,8.8-9.4C19.5,16.3,15.6,12.2,10.7,11.9z M13.3,24.4H6.7V23h6.6V24.4z M13.3,19.6H6.7v-1.4h6.6V19.6z',
            handleSize: '80%',
            handleStyle: {
                color: '#fff',
                shadowBlur: 3,
                shadowColor: 'rgba(0, 0, 0, 0.6)',
                shadowOffsetX: 2,
                shadowOffsetY: 2
            }
        }],
        series: [
            {
                name: '模拟数据',
                type: 'line',
                smooth: true,
                symbol: 'none',
                sampling: 'average',
                itemStyle: {
                    normal: {
                        color: 'rgb(255, 70, 131)'
                    }
                },
                areaStyle: {
                    normal: {
                        color: new echarts.graphic.LinearGradient(0, 0, 0, 1, [{
                            offset: 0,
                            color: 'rgb(255, 158, 68)'
                        }, {
                            offset: 1,
                            color: 'rgb(255, 70, 131)'
                        }])
                    }
                },
                data: data
            }
        ]
    };
    mychart.setOption(option, true);
</script>

这里写图片描述