用JSON绘制谷歌图表

Question

如果它是一个单独的JSON文件,我如何检索和使用谷歌图表的数据集？我试过jQuery getJSON但是无法让它工作..谷歌Viz应该使用JSON绘制条形图是否有原生的谷歌API方式？或者我可以找到使用jQuery的方法以及如何使用？谢谢

      // Load the Visualization API and the piechart package.
  google.load('visualization', '1.0', {'packages':['corechart']});

  // Set a callback to run when the Google Visualization API is loaded.
  google.setOnLoadCallback(drawChart);

  // Callback that creates and populates a data table, 
  // instantiates the pie chart, passes in the data and
  // draws it.
  function drawChart() {

      // Create the data table.
      var data = new google.visualization.DataTable();
      data.addColumn('string', 'Products');
      data.addColumn('number', 'Automated');
      data.addRows([
        ['Product 1', 85],
        ['Product 2', 75],
        ['Product 3', 90], 
        ['Product 4', 40],
        ['Product 5', 40]
      ]);

      // Set chart options
      var pie_options = {'title':'How Much Automated our Products are?',
                     'width':520,'height':300
                    };
      var bar_options ={'width': 620, 'height': 300, 
                        'title': 'Products',
                        'hAxis': {'title': '% Automated', 'titleTextStyle': {'color': 'red', 'fontSize': 16}}
                      }
      // Instantiate and draw our chart, passing in some options.
      var chart = new google.visualization.PieChart(document.getElementById('piechart_div'));
      chart.draw(data, pie_options);

     var chart = new google.visualization.ColumnChart(document.getElementById('barchart_div'));
     chart.draw(data, bar_options);
}

Answer 1

new google.visualization.DataTable(json) 作品.

查看dataTable.toJSON()要使用的正确结构的输出.

因此,如果您的服务器上有一个getjson.php脚本,它返回正确格式化的json,那么您可以这样做:

$.getJSON('/getjson.php', function(json) {
    var dataTable = new google.visualization.DataTable(json);
});