Google 可视化柱形图 - 如何将标签制作为货币

Question

我只是想弄清楚如何将我的标签格式化为显示为货币而不仅仅是数字：

echo '  <script type="text/javascript" src="http://www.google.com/jsapi"></script>
  <script type="text/javascript">
    google.load("visualization", "1", {packages:["corechart"]});
    google.setOnLoadCallback(drawChart);
    function drawChart() {
        var data = new google.visualization.DataTable();
        data.addColumn("string", "ZipCode");
        data.addColumn("number", "Sales");
        data.addRows('.$count.');';

$i = 0;
foreach ($results as $r) {
    $p = (($r->report_trans_amount / $total) * 100);
    $pd = strval(number_format($p, 1));
    echo '        data.setValue(' . $i . ', 0, "' . $r->member_address_zip_code .
                          ' - ' . $pd . '%");';
    echo '        data.setValue(' . $i . ', 1, ' . $r->report_trans_amount . ');';
    $i++;
}

echo '        var chart = new google.visualization.PieChart(
                          document.getElementById("chart_div"));
        chart.draw(data, {width:900, height:500, is3D:true});
    }
  </script>
  <div id="chart_div"></div>
';

我希望“销售额”列显示为美元货币值。我怎样才能做到这一点？我了解如何使用 URL 请求来完成此操作，但这对这种情况没有帮助。

我似乎找不到任何好的例子。

Answer 1

看来您可能想看看 setFormattedValue
http://code.google.com/apis/chart/interactive /docs/reference.html#DataTable_setFormattedValue
对于格式的内容请参阅
http://code.google.com/apis/chart/interactive /docs/reference.html#formatters

我还没有尝试过这个，但据我所知这对你有用：

echo '
    <script type="text/javascript" src="http://www.google.com/jsapi"></script>
    <script type="text/javascript">
      google.load("visualization", "1", {packages:["corechart"]});
      google.setOnLoadCallback(drawChart);
      function drawChart() {
        var data = new google.visualization.DataTable();
        data.addColumn("string", "ZipCode");
        data.addColumn("number", "Sales");
        data.addRows('.$count.');
        var formatter = new google.visualization.NumberFormat({prefix: \'$\'});
        formatter.format(data, 1);';

        $i = 0;
        foreach($results as $r){
            $p = (($r->report_trans_amount / $total) * 100);
            $pd = strval(number_format($p, 1));
            echo 'data.setValue('.$i.', 0, "'.$r->member_address_zip_code.' - '.$pd.'%");';
            //echo 'data.setFormattedValue('.$i.', 1, formatter);'; // might not need this with the formatter.format above
            echo 'data.setValue('.$i.', 1, '.$r->report_trans_amount.');';
            $i++;
        }


echo '  var chart = new google.visualization.PieChart(document.getElementById("chart_div"));
        chart.draw(data, {width:900, height:500, is3D:true});
      }
    </script>
    <div id="chart_div"></div>
';

参考文献：
http://code.google.com/p /google-visualization-api-issues/issues/detail?id=282