In the while loop, you need to access the data columns by their SQL names:
while($r=mysql_fetch_assoc($sqlresult1)){
$temp=array();
$temp[]=array('v' => $r['userid']);
$temp[]=array('v' => $r['group_name']);
$temp[]=array('v' => $r['req_nodes']);
$temp[]=array('v' => $r['actualPE']);
$rows[]=array('c' => $temp);
}
Try that. If it doesn't work, then open the data source php page in a
browser and post the printed JSON here,
On Tuesday, February 26, 2013 11:11:57 AM UTC-5, akshita gupta wrote:
>
> Thanks for your help..but still its not working. Please guide me.
> Here is the modified code.
>
> <?php
>
> mysql_connect('localhost','akshita','123456');
> mysql_select_db('rcusers');
>
> $sqlquery1="select userid,group_name,req_nodes,actualPE from jobs where
> userid='zhang' limit 200";
>
> $sqlresult1=mysql_query($sqlquery1);
>
> $table=array();
> //For testing- data is extracted and printed; without this while below,
> null values taken.
> /*while($t=mysql_fetch_assoc($sqlresult1)){
> $table[]=$t;
> }
> print json_encode($table);*/
> $table['cols']=array(
> array('label'=> 'User ID', type=>'string'),
> array('label'=>'Group Name', type=>'string'),
> array('label'=>'Requested Nodes', type=>'number'),
> array('label'=>'Actual PE', type=>'number')
> );
>
> $rows=array();
> while($r=mysql_fetch_assoc($sqlresult1)){
> $temp=array();
> $temp[]=array('v' => $r['column1']);
> $temp[]=array('v' => $r['column2']);
> $temp[]=array('v' => $r['column3']);
> $temp[]=array('v' => $r['column4']);
>
> $rows[]=array('c' => $temp);
> }
>
> $table['rows']=$rows;
>
> $jsonTable = json_encode($table);
> print $jsonTable;
> //print json_encode($table);
> ?>
>
> -------------------------------------------------------------------------------------------------------------------------------------------------------------------------
> //chartDraw.php
> <html>
> <head>
> <!--Load the AJAX API -->
> <script type="text/javascript" src="https://www.google.com/jsapi
> "></script>
> <script src="
> https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js";
> type="text/javascript"></script>
>
> <script type="text/javascript">
>
> //Load the visualization API and the piechart package
> google.load('visualization','1',{'packages':['corechart']});
>
> //Set a callback to run when the google visualization API is loaded
> google.setOnLoadCallback(drawchart);
>
> function drawChart(){
> var jsonData = $.ajax({
> url:"getData.php",
> dataType:"json",
> async:false
> }).responseText;
>
> alert(jsonData);
> //Create our data table out of JSON data loaded from server
> var data=new google.visualization.DataTable(jsonData);
>
> //Instantiate and draw our chart, passing in some options
> var chart=new
> google.visualization.PieChart(document.getElementById('chart_div'));
> chart.draw(data,{width:400,height:240});
> }
>
> </script>
> </head>
>
> <body>
> <!--Div that will hold the pie chart -->
> <div id="chart_div"></div>
> </body>
> </html>
>
>
> Thanks
> Akshita
>
>
> On Mon, Feb 25, 2013 at 4:19 PM, asgallant
> <[email protected]<javascript:>
> > wrote:
>
>> You have to format the data returned by your query into the JSON format
>> expected by the DataTable constructor. Here's a basic PHP script that you
>> can work from:
>>
>> <?php
>> /* $server = the IP address or network name of the server
>> * $userName = the user to log into the database with
>> * $password = the database account password
>> * $databaseName = the name of the database to pull data from
>> */
>> $con = mysql_connect($server, $userName, $password) or die('Error
>> connecting to server');
>>
>> mysql_select_db($databaseName, $con);
>>
>> // write your SQL query here (you may use parameters from $_GET or $_POST
>> if you need them)
>> $query = mysql_query('SELECT column1, column2, column3 FROM myTable');
>>
>> $table = array();
>> $table['cols'] = array(
>> /* define your DataTable columns here
>> * each column gets its own array
>> * syntax of the arrays is:
>> * label => column label
>> * type => data type of column (string, number, date, datetime, boolean)
>> */
>> array('label' => 'Label of column 1', 'type' => 'string'),
>> array('label' => 'Label of column 2', 'type' => 'number'),
>> array('label' => 'Label of column 3', 'type' => 'number')
>> // etc...
>> );
>>
>> $rows = array();
>> while($r = mysql_fetch_assoc($query)) {
>> $temp = array();
>> // each column needs to have data inserted via the $temp array
>> $temp[] = array('v' => $r['column1']);
>> $temp[] = array('v' => $r['column2']);
>> $temp[] = array('v' => $r['column3']);
>> // etc...
>> // insert the temp array into $rows
>> $rows[] = array('c' => $temp);
>> }
>>
>> // populate the table with rows of data
>> $table['rows'] = $rows;
>>
>> // encode the table as JSON
>> $jsonTable = json_encode($table);
>>
>> // set up header; first two prevent IE from caching queries
>> header('Cache-Control: no-cache, must-revalidate');
>> header('Expires: Mon, 26 Jul 1997 05:00:00 GMT');
>> header('Content-type: application/json');
>>
>> // return the JSON data
>> echo $jsonTable;
>> ?>
>>
>> On Monday, February 25, 2013 3:58:55 PM UTC-5, akshita gupta wrote:
>>>
>>> Hello.. I am unable to display chart. Please help. I am unable to figure
>>> out the problem.
>>>
>>> getdata.php
>>>
>>> <?php
>>>
>>> mysql_connect('localhost','**akshita','123456');
>>> mysql_select_db('rcusers');
>>>
>>> $sqlquery1="select userid,group_name,req_nodes,**actualPE from jobs
>>> <http://stackoverflow.com/questions/15073654/unable-to-extract-data-to-get-google-chart-nothing-is-being-displayed-but-getda#>
>>> where userid='zhang' limit 200";
>>>
>>> $sqlresult1=mysql_query($**sqlquery1);
>>>
>>> $rows=array();
>>> while($r=mysql_fetch_assoc($**sqlresult1)){
>>> $rows[]=$r;}print json_encode($rows);?>
>>>
>>> chartDraw.php
>>> <html><head><!--Load the AJAX API --><script type="text/javascript"
>>> src="https://www.google.com/**jsapi
>>> <https://www.google.com/jsapi>"></script><script
>>> src="https://ajax.googleapis.**com/ajax/libs/jquery/1.8.3/**jquery.min.js
>>> <https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js>"
>>> type="text/javascript"></**script>
>>> <script type="text/javascript">
>>> //Load the visualization API and the piechart package
>>> google.load('visualization','**1',{'packages':['corechart']})**;
>>> //Set a callback to run when the google visualization API is loaded
>>> google.setOnLoadCallback(drawc**hart);
>>> function drawChart(){
>>> var jsonData = $.ajax({
>>> url:"getData.php",
>>> dataType:"json",
>>> async:false
>>> }).responseText;
>>> //Create our data table out of JSON data loaded from servervar data=new
>>> google.visualization.DataTable**(jsonData);
>>> //Instantiate and draw our chart
>>> <http://stackoverflow.com/questions/15073654/unable-to-extract-data-to-get-google-chart-nothing-is-being-displayed-but-getda/15073745#>,
>>> passing in some optionsvar chart=new
>>> google.visualization.PieChart(**document.getElementById('**chart_div'));
>>> chart.draw(data,{width:400,hei**ght:240});}
>>> </script></head>
>>> <body>
>>> <!--Div that will hold the pie chart -->
>>> <div id="chart_div"></div></body></html>
>>>
>>>
>>>
>>> On Tuesday, 26 July 2011 15:24:36 UTC-4, GerBen wrote:
>>>>
>>>> Hello Colleagues,
>>>> How can I read data from an external database (say, MS SQL Server or
>>>> MySQL) and show it in a Google Chart?
>>>> Thank you.
>>>
>>> --
>> You received this message because you are subscribed to a topic in the
>> Google Groups "Google Visualization API" group.
>> To unsubscribe from this topic, visit
>> https://groups.google.com/d/topic/google-visualization-api/UdOFybnvFo0/unsubscribe?hl=en
>> .
>> To unsubscribe from this group and all its topics, send an email to
>> [email protected] <javascript:>.
>>
>> To post to this group, send email to
>> [email protected]<javascript:>
>> .
>> Visit this group at
>> http://groups.google.com/group/google-visualization-api?hl=en.
>> For more options, visit https://groups.google.com/groups/opt_out.
>>
>>
>>
>
>
>
> --
> Akshita Gupta
> Graduate CS Student
> University Of Florida, United States
>
--
You received this message because you are subscribed to the Google Groups
"Google Visualization API" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at
http://groups.google.com/group/google-visualization-api?hl=en.
For more options, visit https://groups.google.com/groups/opt_out.
