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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',
            // 'map/js/china',
            // './data/nutrients.json'
        ], function (echarts) {
            var option;

            option = {
                title: {
                    text: 'Step Line',
                },
                legend: {
                    data: ['Step Start', 'Step Middle', 'Step End'],
                },
                xAxis: {
                    type: 'category',
                    data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'],
                },
                yAxis: {
                    type: 'value',
                },
                series: [
                    {
                        name: 'Step Start',
                        type: 'line',
                        step: 'start',
                        connectNulls: false,
                        data: [120, null, 101, null, 90, 230, 210],
                    },
                    {
                        name: 'Step Middle',
                        type: 'line',
                        step: 'middle',
                        connectNulls: true,
                        data: [220, 282, null, 234, null, 430, 410],
                    },
                    {
                        name: 'Step End',
                        type: 'line',
                        step: 'middle',
                        connectNulls: true,
                        data: [450, null, null, null, 590, 530, 510],
                    },
                ],
            };

            var chart = testHelper.create(echarts, 'main0', {
                title: [
                    'Test line-step with null points',
                    'when using connectNulls: true'
                ],
                option: option
                // height: 300,
                // buttons: [{text: 'btn-txt', onclick: function () {}}],
                // recordCanvas: true,
            });
        });
        </script>


    </body>
</html>