highchart code add by self

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>

<script src="http://code.highcharts.com/highcharts.js"></script>

<script src="http://code.highcharts.com/modules/exporting.js"></script>


<%= wicked_pdf_javascript_include_tag 'jquery-1.6.2.min', 'dr_statistics/highcharts' %>

<script>


  $(function () {

     $('#container').highcharts({

      chart: {

        type: 'column'

      },

      first_name: {

        text: 'Monthly Average Rainfall'

      },

      last_name: {

        text: 'Source: WorldClimate.com'

      },

      xAxis: {

        students: [

          'first_name',

          'last_name'

          

        ]

      },

      yAxis: {

        min: 0,

        title: {

          text: 'Rainfall (mm)

'

        }

      },

      tooltip: {

        headerFormat: '<span style="font-size:10px">{point.key}</span><table>',

        pointFormat: '<tr><td style="color:{series.color};padding:0">{series.name}: </td>' +

          '<td style="padding:0"><b>{point.y:.1f} mm</b></td></tr>',

        footerFormat: '</table>',

        shared: true,

        useHTML: true

      },

      plotOptions: {

        column: {

          pointPadding: 0.2,

          borderWidth: 0,

          enableMouseTracking: false,

          shadow: false,

          animation: false }

      },

      series:[

        <%@students.each do |op|%>

        {

            first_name:'<%= op.first_name%>',

            data:[<%= Student.count%>]

        },

        <% end %>

      ]

    });

  });

</script>


series: [{

        name: 'Amount',

        data: []

    }]

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