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  • echarts 折线图动态x轴及数据

    <!DOCTYPE html>
    <html lang="en">
    <head>
    <meta charset="utf-8">
    <title>ECharts</title>
    </head>
    <body>
    <!--Step:1 Prepare a dom for ECharts which (must) has size (width & hight)-->
    <!--Step:1 为ECharts准备一个具备大小(宽高)的Dom-->
    <input type="button" value="测试" onclick="test()" />
    <div id="main" style="height:500px;border:1px solid #ccc;padding:10px;"></div>

    <!--Step:2 Import echarts-all.js-->
    <!--Step:2 引入echarts-all.js-->
    <script src="js/echarts-all.js"></script>

    <script type="text/javascript">
    // Step:3 echarts & zrender as a Global Interface by the echarts-plain.js.
    // Step:3 echarts和zrender被echarts-plain.js写入为全局接口
    var myChart = echarts.init(document.getElementById('main'));
    myChart.setOption({
    tooltip : {
    trigger: 'axis'
    },

    toolbox: {
    show : true,
    feature : {
    mark : {show: true},
    dataView : {show: true, readOnly: false},
    magicType : {show: true, type: ['line', 'bar']},
    restore : {show: true},
    saveAsImage : {show: true}
    }
    },
    xAxis : [
    {
    type : 'category',
    data : ['1月','2月','3月','4月','5月','6月','7月','8月','9月','10月','11月','12月']
    }
    ],
    yAxis : [
    {
    type : 'value',
    splitArea : {show : true}
    }
    ],
    series : [
    {
    name:'温度值',
    type:'line',
    data:[2.0, 4.9, 7.0, 23.2, 25.6, 76.7, 135.6, 162.2, 32.6, 20.0, 6.4, 3.3]
    }
    ]
    });
    var now = +new Date(1997, 9, 3);
    var oneMinutes = 60 * 1000*15;
    var value = Math.random() * 1000;
    function test() {
    var dates = [];
    var datas = [];
    for (var i = 0; i < 24 * 4; i++) {
    now = new Date(+now + oneMinutes);
    dates.push(now.getHours() + ":" + now.getMinutes());
    value = value + Math.random() * 21 - 10;
    datas.push(value);
    }

    myChart.setOption({

    xAxis: [
    {
    type: 'category',
    data: dates
    }
    ],
    series: [
    {
    name: '蒸发量',
    type: 'line',
    data: datas
    }
    ]
    });
    }

    </script>
    </body>
    </html>

    运行截图

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  • 原文地址:https://www.cnblogs.com/wangchaozhi/p/5246008.html
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