Google Charts折线图中的a轴上的日期

Question

这是一个新手问题,但如何在Google Charts折线图中使用x轴的日期？

当我使用新的日期(...)时,我收到错误消息"未捕获错误:不支持日期和日期时间列类型"

      google.load("visualization", "1", {packages:["corechart"]});
      google.setOnLoadCallback(drawChart);
      function drawChart() {
        var data = google.visualization.arrayToDataTable([
['Datum','Person1','Person2','Person3'],
[new Date(2012, 12, 19, 0, 0, 0),'5072.0537223002','5072.0537223002','5074.2809630567'],
[new Date(2012, 12, 20, 0, 0, 0),'5072.0537223002','5072.0537223002','5074.2809630567'],
]);

        var options = {};

        var chart = new google.visualization.LineChart(document.getElementById('chart_div'));
        chart.draw(data, options);
      }

(在x轴上使用字符串均匀的空格是可以接受的,但是当我尝试使用字符串时"轴#0的数据列不能是字符串类型")

Answer 1

如何将日期转换为字符串,只需使用Date不new如下所示:

      google.load("visualization", "1", {packages:["corechart"]});
      google.setOnLoadCallback(drawChart);
      function drawChart() {
        var data = google.visualization.arrayToDataTable([
['Datum','Person1','Person2','Person3'],
[Date(2012, 12, 19, 0, 0, 0).toString(),'5072.0537223002','5072.0537223002','5074.2809630567'],
[Date(2012, 12, 20, 0, 0, 0).toString(),'5072.0537223002','5072.0537223002','5074.2809630567'],
]);

        var options = {};

        var chart = new google.visualization.LineChart(document.getElementById('chart_div'));
        chart.draw(data, options);
      }

编辑: 您可以在此链接中关注他们的示例:

https://google-developers.appspot.com/chart/interactive/docs/customizing_axes

编辑2:

这就是我能做的:http: //jsfiddle.net/ANC9H/2/

    google.load("visualization", "1", {packages:["LineChart"]});
    google.setOnLoadCallback(drawChart);
    function drawChart() {
    var data = new google.visualization.DataTable();
        data.addColumn('date', 'Date');
        data.addColumn('number', 'persone1');
        data.addColumn('number', 'persone2');
        data.addColumn('number', 'persone3');
        data.addRows([
                       [new Date(2008, 1 ,1),0.7,0.8,0.6],
                       [new Date(2008, 1 ,7),0.5,0.55,0.9] ]);
    var options = {};

    var chart = new google.visualization.LineChart(document.getElementById('chart_div'));
        chart.draw(data, options);
    }

我希望这有帮助.