Google图表数组-行0的行类型无效

第一次使用GoogleChartsAPI,我可以想象它可以工作。但是当我查看Chrome控制台时,我得到一个错误消息: invalid row type for row 0 .试着四处寻找为什么会发生这种情况,但我不能完全弄清楚。

如果有帮助, here 这是我学习的教程。

这是我的代码:

<script type='text/javascript'>
    google.load('visualization', '1', {packages: ['corechart']});
</script>

<script type='text/javascript'>
    function drawVisualization() {
        var gdata = google.visualization.arrayToDataTable(['TurbTemp_F'], ['45.68'], ['45.68'], ['45.86'], ['45.86'], ['45.86'], ['45.86'], ['45.86'], ['45.86'], ['45.86'], ['45.5'], ['45.5'], ['45.68'], ['45.86'], ['45.86'], ['46.04'], ['46.22'], ['46.4'], ['46.58'], ['46.58'], ['46.76'], ['46.94'], ['47.12'], ['47.12'], ['47.3'], ['47.66'], ['47.66'], ['47.66'], ['47.84'], ['48.02'], ['48.02'], ['48.02'], ['48.2'], ['48.38'], ['48.74'], ['48.74'], ['48.92']);
        var options = {
            title: 'Title here',
            vAxis: { title: 'vvv' },
            seriesType: 'bars',
            series: {
                3: { type: 'area' }
            }
        };
        var chart = new google.visualization.ComboChart(document.getElementById('chart_div'));
        chart.draw(gdata, options);
    }
    google.setOnLoadCallback(drawVisualization);
</script>

任何帮助都将不胜感激!谢谢