I have a database containing 4 columns. I want to display them on a line chart by Google Api charts. I have followed instructions from youtube but the charts wont display. I am not getting any errors of why the charts won't display. Any help is greatly appreciated.
This is my code of the php page called baragraph.php. I know that my connection is working since i have table info displayed when the database connection code is run alone in a separate page.
<?php
$mysqli = new mysqli('192.168.64.2','root','rootroot','vegetables');
$query = sprintf("Select name,time,weight FROM vegedata");
$result = $mysqli->query($query);
$rows = array();
$table = array();
$table['cols'] = array(
array(
'label' => 'name',
'type' => 'varchart'
),
array(
'label' => 'time',
'type' => 'datetime'
),
array(
'label' => 'weight',
'type' => 'varchar'
)
);
while($row = mysqli_fetch_array($result))
{
$sub_array = array();
#$datetime = explode(".",$row["datetime"]);
#$sub_array[] = array(
#"v" => 'time(' . $datetime[0].'000)'
#);
$sub_array[] = array(
"v" => $row["name"]
);
$rows[] = array(
"c" => $sub_array
);
}
$table['rows'] = $rows;
$jsonTable = json_encode($table);
?>
<!DOCTYPE html>`enter code here`
<html>
<head>
<!--Load the AJAX API-->
<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
<script type="text/javascript" src="//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"> </script>
<script type='text/javascript'>
google.charts.load('current',{'packages':['corechart']});
google.charts.setOnLoadCallback(drawChart);
function drawChart(){
var data = new google.visualization.DataTable(
<?php echo $jsonTable; ?>);
var options = {
title: 'Vegetables Chart'
legend:{position:'bottom'},
chatArea:{width:'95%',height:'65%'}
};
var chart = new google.visualization.Linechart(
document.getElementbyId('line_chart'));
chart.draw(data, options);
}
</script>
</head>
<body>
<div id="page-wrapper">
<br />
<h2 align="center">Charts</h2>
<div id="line_chart" style="width: 100%; height:500px"></div>
</div>
</body>
</html>
Related
I'm trying to draw a Pie Chart with my database. I used Google Pie Chart , PHP and MySql.
I run the code doesn't show any errors but I don't see pie chart showing up.
Can please someone tell me where to modify to make it work?
Thanks.
<?php
/* Your Database Name */
$dbname = 'chart';
$username = 'root';
$password = '';
try {
/* Establish the database connection */
$conn = new PDO("mysql:host=localhost;dbname=$dbname", $username, $password);
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
/* select all the weekly tasks from the table googlechart */
$result = $conn->query('SELECT Nature, concat((count( * ) *100 / (SELECT count( * ) FROM `tfichiers`)) , "%") AS percent FROM `tfichiers` GROUP BY Nature ');
$rows = array();
$table = array();
$table['cols'] = array(
// Labels for your chart, these represent the column titles.
/*
note that one column is in "string" format and another one is in "number" format
as pie chart only required "numbers" for calculating percentage
and string will be used for Slice title
*/
array('label' => 'Nature', 'type' => 'string'),
array('label' => 'percent', 'type' => 'number')
);
/* Extract the information from $result */
foreach($result as $r) {
$temp = array();
// the following line will be used to slice the Pie chart
$temp[] = array('v' => (string) $r['Nature']);
// Values of each slice
$temp[] = array('v' => (int) $r['percent']);
$rows[] = array('c' => $temp);
}
$table['rows'] = $rows;
// convert data into JSON format
$jsonTable = json_encode($table);
//echo $jsonTable;
} catch(PDOException $e) {
echo 'ERROR: ' . $e->getMessage();
}
?>
<html>
<head>
<!--Load the Ajax API-->
<script type="text/javascript" src="https://www.google.com/jsapi"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
<script type="text/javascript">
// Load the Visualization API and the piechart package.
google.load('visualization', '1', {'packages':['corechart']});
// Set a callback to run when the Google Visualization API is loaded.
google.setOnLoadCallback(drawChart);
function drawChart() {
// Create our data table out of JSON data loaded from server.
var data = new google.visualization.DataTable(<?=$jsonTable?>);
var options = {
title: 'Demande par Nature',
is3D: 'true',
width: 800,
height: 600
};
// Instantiate and draw our chart, passing in some options.
// Do not forget to check your div ID
var chart = new google.visualization.PieChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
</script>
</head>
<body>
<!--this is the div that will hold the pie chart-->
<div id="chart_div"></div>
</body>
</html>
I'm trying to get Google Charts to display a graph of what I have in my MySQL database. Unfortunately, it's not displaying anything. I know there has to be some sort of small error that I'm missing.
<?php
mysql_connect("Localhpst", "Username", "password");
mysql_select_db("DBName") or die(mysql_error());
$sth=mysql_query("SELECT *
FROM Graph")
or die(mysql_error());
$rows = array();
$flag = true;
$table = array();
$table['cols'] = array(
array('label' => 'people', 'type' => 'string'),
array('label' => 'total', 'type' => 'number')
);
$rows = array();
while($r = mysql_fetch_assoc($sth)) {
$temp = array();
$temp[] = array('v' => (string) $r['people']);
$temp[] = array('v' => (int) $r['total']);
$rows[] = array('c' => $temp);
}
$table['rows'] = $rows;
$jsonTable = json_encode($table);
//echo $jsonTable;
?>
<html>
<head>
<script type="text/javascript" src="https://www.google.com/jsapi"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
<script type="text/javascript">
// Load the Visualization API and the piechart package.
google.load('visualization', '1', {'packages':['corechart']});
// Set a callback to run when the Google Visualization API is loaded.
google.setOnLoadCallback(drawChart);
function drawChart() {
// Create our data table out of JSON data loaded from server.
var data = new google.visualization.DataTable(<?=$jsonTable?>);
var options = {
title: ' Something ',
is3D: 'true',
width: 800,
height: 600
};
var chart = new google.visualization.PieChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
</script>
</head>
<body>
<!--this is the div that will hold the pie chart-->
<div id="chart_div"></div>
</body>
</html>
What is missing that would result in this displaying nothing on the screen. The only thing it displays is the "Something" from the title. I know there is data in the database, so that's not the issue. I'm also fairly certain it's not a connection issue, so I'm stumped.
Trying to get my json output in the right format for a google visualisation line chart but I am clearly doing something wrong as it is returning table has no columns. As explained in the docs I am using Ajax to call a php page.
getData.php
<?php
class MyDB extends SQLite3
{
function __construct()
{
$this->open('water.db');
}
}
$db = new MyDB();
if(!$db){
echo $db->lastErrorMsg();
} else {
//echo "Opened database successfully\n";
}
$sql =<<<EOF
SELECT * from wT;
EOF;
$data = array();
$data['cols'][] = array('label' => 'Temperature', 'type' => 'number');
$data['cols'][] = array('label' => 'Time', 'type' => 'string');
$rows = array();
$ret = $db->query($sql);
while($row = $ret->fetchArray(SQLITE3_ASSOC) ){
$temp = array();
$temp[] = array('v' => (float) $row['fishTemp']);
$temp[] = array('v' => (string) $row['time']);
$rows = array('c' => $temp);
$data['rows'][] = $rows;
}
$jsonTable = json_encode($data, true);
var_dump($jsonTable);
$db->close();
?>
base.html
<html>
<head>
<script type="text/javascript" src="https://www.google.com/jsapi"></script>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script type="text/javascript">
google.load("visualization", "1", {packages:["corechart"]});
google.setOnLoadCallback(drawChart);
function drawChart() {
var jsonData = $.ajax({
url: "getData.php",
dataType:"json",
async: false
}).responseText;
// Create our data table out of JSON data loaded from server.
console.log(jsonData);
//var obj = window.JSON.stringify(jsonData);
var data = new google.visualization.DataTable(jsonData);
var options = {
title: 'Title'
};
var chart = new google.visualization.LineChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
</script>
</head>
<body>
<div id="chart_div" style="width: 900px; height: 500px;"></div>
</body>
</html>
The output from the console looks like this....what am I missing?!
"{"cols":[{"label":"Temperature","type":"string"},{"label":"Time","type":"date"}],"rows":[{"c":[{"v":18.25},{"v":"2014-08-19 16:23:23"}]},{"c":[{"v":18.25},{"v":"2014-08-19 16:23:31"}]},{"c":[{"v":18.25},{"v":"2014-08-19 16:23:39"}]},{"c":[{"v":18.25},{"v":"2014-08-19 16:23:47"}]},{"c":[{"v":18.25},{"v":"2014-08-19 16:23:55"}]},{"c":[{"v":18.25},{"v":"2014-08-19 16:24:06"}]},{"c":[{"v":18.25},{"v":"2014-08-19 16:24:14"}]}
Loading dataTable with json accepts dates as a string in the following format: Date(year, month, day[,hour, minute, second[, millisecond]]) where everything after day is optional, and months are zero-based.
So for your first timeStamp, it should be :
{"v":"Date(2014,07,19,16,23,23)"}
If you want to use directly the milliseconds time:
{"v":"Date(1411154603000)}
Thanks for all the inputs from Stackoverflow. I am able to place the 2 google chart in one page, but the 2nd chart is showing below 1st chart. But i need both charts in parallel to each other.
Like:
1st chart from Left it should be 100th position, top =200 and 2nd chart should be 300th position, top=200. How can i achieve that. I used chartArea:{left:20,top:0,width:"50%",height:"75%"}, but i am not getting
<?php
$con=mysql_connect("","root","") or die("Failed to connect with database!!!!");
mysql_select_db("Loan_Bids", $con);
$sth = mysql_query("SELECT A.Bid_Size, B.Rating from bids_data A, loan_data B Where A.LoanID = B.LoanID");
$rows = array();
$rows1 = array();
//flag is not needed
$flag = true;
$table = array();
$table['cols'] = array(
array('label' => 'Bid_Size', 'type' => 'number'),
array('label' => 'Rating', 'type' => 'number')
);
$table1 = array();
$table1['cols'] = array(
array('label' => 'Bid_Size', 'type' => 'number'),
array('label' => 'Rating', 'type' => 'number')
);
$rows = array();
$rows1 = array();
while($r = mysql_fetch_assoc($sth)) {
$Ratingval = $r['Rating'];
if ($Ratingval == 1 )
{
$temp = array();
// the following line will be used to slice the Pie chart
$temp[] = array('v' => (int) $r['Bid_Size']);
// Values of each slice
$temp[] = array('v' => (int) $r['Rating']);
$rows[] = array('c' => $temp);
}
if ($Ratingval == 2 )
{
$temp1 = array();
// the following line will be used to slice the Pie chart
$temp1[] = array('v' => (int) $r['Bid_Size']);
// Values of each slice
$temp1[] = array('v' => (int) $r['Rating']);
$rows1[] = array('c' => $temp1);
}
}
$table['rows'] = $rows;
$jsonTable = json_encode($table);
$table1['rows'] = $rows1;
$jsonTable1 = json_encode($table1);
echo $jsonTable1;
?>
<html>
<head>
<!--Load the Ajax API-->
<script type="text/javascript" src="https://www.google.com/jsapi"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
<script type="text/javascript">
google.load('visualization', '1', {'packages':['corechart']});
// Set a callback to run when the Google Visualization API is loaded.
google.setOnLoadCallback(drawChart);
function drawChart() {
// Create our data table out of JSON data loaded from server.
var data = new google.visualization.DataTable(<?php echo $jsonTable?>);
var options = {
title: 'Rating1',
is3D: 'true',
color:'red',
hAxis: {title: 'Interest Rate'},
vAxis: {title: 'Bid Size'},
width:200,height:200
};
var data1 = new google.visualization.DataTable(<?php echo $jsonTable1?>);
var options1 = {
title: 'Rating2',
is3D: 'true',
hAxis: {title: 'Interest Rate'},
vAxis: {title: 'Bid Size'},
width:200,height:200
};
// Instantiate and draw our chart, passing in some options.
// Do not forget to check your div ID
var chart = new google.visualization.ScatterChart(document.getElementById('chart_div'));
chart.draw(data, options);
var chart1 = new google.visualization.ScatterChart(document.getElementById('chart_div1'));
chart1.draw(data1, options1);
}
</script>
</head>
<body>
<!--this is the div that will hold the pie chart-->
<div id="chart_div"></div>
<div id="chart_div1"></div>
</body>
</html>
You need to use CSS to position the container divs on the page, not the chartArea options. Something like this should work:
#chart_div, #chart_div1 {
float: left;
width: 50%;
}
I am using this code to call data from mysql and display it as a pie chart. But the chart not showing the exact value from column, whereas its showing as a percentage.
I want to display the exact value.
This is my code
<?php
$con=mysql_connect("localhost","pramir_feedback","feedback") or die("Failed to connect with database!!!!");
mysql_select_db("pramir_feedback", $con);
$sth = mysql_query("SELECT * FROM average");
$rows = array();
$flag = true;
$table = array();
$table['cols'] = array(
array('label' => 'data', 'type' => 'string'),
array('label' => 'average', 'type' => 'number')
);
$rows = array();
while($r = mysql_fetch_assoc($sth)) {
$temp = array();
$temp[] = array('v' => (string) $r['data']);
$temp[] = array('v' => (int) $r['average']);
$rows[] = array('c' => $temp);
}
$table['rows'] = $rows;
$jsonTable = json_encode($table);
?>
<html>
<head>
<!--Load the Ajax API-->
<script type="text/javascript" src="https://www.google.com/jsapi"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></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() {
// Create our data table out of JSON data loaded from server.
var data = new google.visualization.DataTable(<?=$jsonTable?>);
var options = {
title: 'Average Data',
is3D: 'true',
width: 800,
height: 600
};
// Instantiate and draw our chart, passing in some options.
// Do not forget to check your div ID
var chart = new google.visualization.PieChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
</script>
</head>
<body>
<!--this is the div that will hold the pie chart-->
<div id="chart_div">fgfgfgfhiefkefejkfwefhfwjkefewfwf</div>
</body>
</html>
Here you can see the chart http://innovatrix.co.in/feedback_priyajit/graph.php
Thanks.
You need to ad the pieSliceText paramater, which takes the following values 'percentage','value','label' and 'none'
var options = {
title: 'Average Data',
is3D: 'true',
width: 800,
height: 600,
pieSliceText : 'value'};
For more details , click here
https://developers.google.com/chart/interactive/docs/gallery/piechart#Configuration_Options