Google Chart错误:“X值列不能是字符串类型”

时间:2014-08-31 09:00:34

标签: php google-visualization

我正在尝试使用谷歌折线图。我可以使用x在页面上打印yecho值,但不在图表中。它给了我以下错误:

  

" X值列不能是字符串"

我也在DataTable之后关闭了while循环,但它也没有工作。

代码如下:

<?php

@mysql_connect("localhost","root","") or die ("MYSQL'e Baglanti Yok"); 
@mysql_select_db("exceltosql") or die ("Veritabanina baglanti yapilamadi"); 
$sql1= "SELECT x,y FROM veri  ";
$result1=mysql_query($sql1) or die(mysql_error());
$result_array = array();
while($row1 = mysql_fetch_array($result1)){
$result_array[] = $row1;

echo "<pre>";
echo $row1 ['x'];
echo $row1 ['y'];
}
?>
<html>
  <head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
    <script type="text/javascript" src="https://www.google.com/jsapi"></script>
    <script type="text/javascript">


      google.load("visualization", "1", {packages:["corechart"]});
      google.setOnLoadCallback(drawChart);
      function drawChart() {
        var data = google.visualization.arrayToDataTable([
        ['x', 'y'], 
        ['<?php $row1 ['x'];?>', '<?php $row1 ['y'];?>'],



        ]);

        var options = {
          title: 'VO2 vs. VCO2 grafiği',
          hAxis: {title: 'VCO2', minValue: 600, maxValue: 1500},
          vAxis: {title: 'VO2', minValue: 600, maxValue: 1500},
          legend: 'none'
        };

        var chart = new google.visualization.ScatterChart(document.getElementById('chart_div'));

        chart.draw(data, options);
      }

    </script>
  </head>
  <body>
    <div id="chart_div" style="width: 900px; height: 500px;"></div>
  </body>
</html>

1 个答案:

答案 0 :(得分:0)

这一行的结果:

['<?php $row1 ['x'];?>', '<?php $row1 ['y'];?>'],

将是这样的:

['1', '2'],

将数值编码为字符串(如错误消息所示)。删除额外的引号应该可以解决问题:

[<?php $row1 ['x'];?>, <?php $row1 ['y'];?>],