谷歌可视化 - 带注释的时间线 SQL

Question

hi everyone i am trying to figure out how this is going to work.大家好，我想弄清楚这是如何工作的。 i dont know why i am always getting a blank page我不知道为什么我总是得到一个空白页

Heres my code这是我的代码

from the index.html来自索引.html

<html>
  <head>
    <script type="text/javascript" src="http://www.google.com/jsapi"></script>
    <script type="text/javascript">
      google.load("visualization", "1", {packages:["annotatedtimeline"]});
      google.setOnLoadCallback(drawChart);
      function drawChart() {
        //Tell Google Visualization where your script is
        var query = new google.visualization.Query('/vis.php');
        query.setQuery('select thedate,visits,sales from dothefetch');
        query.send(function(result) {
          if(result.isError()) {
            alert(result.getDetailedMessage());
          } else {
            var chart = new google.visualization.AnnotatedTimeLine(document.getElementById('chart_div'));
            chart.draw(result.getDataTable(), {'colors': ['green', 'blue'], displayAnnotations: true, 'zoomStartTime': new Date(2011, 3 ,1), 'zoomEndTime': new Date(2011, 3 ,2) });
          }
        });
      }
    </script>
  </head>

  <body>
    <div id="chart_div"></div>
  </body>
</html>

And from my vis.php从我的 vis.php

<?php
require_once 'lib/MC/Google/Visualization.php';

$user = 'root';
$db = new PDO('mysql:host=localhost;dbname=mywebsite',$user,'');
$vis = new MC_Google_Visualization($db,'mysql');
/*
foreach($db->query('SELECT * from total') as $row) {
        print_r($row);
  }
*/

$vis->addEntity('dothefetch', array(
'fields' => array(
'thedate' => array('field' => 'thedate', 'type' => 'datetime'),
'visits' => array('field' => 'visits', 'type' => 'number'),
'sales' => array('field' => 'sales', 'type' => 'number')
   )
));

$vis->setDefaultEntity('dothefetch');
$vis->handleRequest();
?>

Can anyone tell me where did i miss out?谁能告诉我我错过了哪里？ I am always getting into a blank page我总是进入一个空白页

Answer 1

I have experienced this problem before.我以前遇到过这个问题。 You need to change this..你需要改变这个..

query.setQuery('select thedate,visits,sales from dothefetch');

.. to this: ..对此：

query.setQuery('select *');

This should work.这应该有效。 If not, try to fix the preg_quote issue: https://code.google.com/p/mc-goog-visualization/issues/detail?id=16如果没有，请尝试修复 preg_quote 问题： https://code.google.com/p/mc-goog-visualization/issues/detail?id=16

EDIT: The same problem as yours could be seen here: Google Vis annotated timeline from SQL database using PHP JSON issue编辑：在这里可以看到与您相同的问题： Google Vis annotated timeline from SQL database using PHP JSON issue

谷歌可视化 - 带注释的时间线 SQL

问题描述

1 个解决方案

解决方案1
0 2013-03-13 00:55:58

谷歌可视化 - 带注释的时间线 SQL

问题描述

1 个解决方案

解决方案1 0 2013-03-13 00:55:58

解决方案1
0 2013-03-13 00:55:58