Good evening everyone,
this moment I try to work with HighChart / HighStock and after several weeks I were able to display my MySQL-data in the charts. But: I always want more.
Well, I try to reach a dynamic chart which is refreshing like the examples you may know from the website. http://jsfiddle.net/sdorzak/HsWF2/
I used the sample code as a guide. It doesn't work, but think the problem is the missing y-axis because y-axis data come from my MySQL database while x-axis should be the current time.
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>POS RESULT</title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
<script src="http://code.highcharts.com/highcharts.js"></script>
<script src="http://code.highcharts.com/modules/exporting.js"></script>
</head>
<body>
<?php
include "config.php";
$SQL1 = "SELECT * FROM Prices WHERE ticker ='FB'";
$result1 = mysql_query($SQL1);
$data1 = array();
while ($row = mysql_fetch_array($result1)) {
$data1[] = $row['Close'];
}
?>
<script type="text/javascript">
$(function () {
var chart;
$(document).ready(function() {
chart = new Highcharts.Chart({
chart: {
renderTo: 'container',
type: 'line',
marginRight: 130,
marginBottom: 25,
events: {
load: function()
{
var series = this.series[0];
setInterval(function() {
var x = (new Date()).getTime();
series.addPoint([x], true);
}, 1000);
},
title: {
text: 'Monthly Average Temperature',
x: -20 //center
},
subtitle: {
text: 'Source: WorldClimate.com',
x: -20
},
xAxis: {
type: 'datetime',
tickPixelInterval: 150
//categories: [<?php echo join(',', $data2); ?>],
},
yAxis: {
title: {
text: 'Temperature (°C)'
},
plotLines: [{
value: 0,
width: 1,
color: '#808080'
}]
},
tooltip: {
formatter: function() {
return '<b>'+ this.series.name +'</b><br/>'+
this.x +': '+ this.y +'°C';
}
},
legend: {
layout: 'vertical',
align: 'right',
verticalAlign: 'top',
x: -10,
y: 100,
borderWidth: 0
},
series: [{
name: 'Tokyo',
data: [<?php echo join(',', $data1); ?>]
}]
});
});
});
</script>
<div id="container" style="min-width: 500px; height: 400px; margin: 0 auto"></div>
</body>
</html>
The passage I am talking about and which is shown in the samples is
chart: {
renderTo: 'container',
type: 'spline',
marginRight: 10,
events: {
load: function() {
// set up the updating of the chart each second
var series = this.series[0];
setInterval(function() {
var x = (new Date()).getTime(), // current time
y = Math.random();
series.addPoint([x, y], true, true);
}, 1000);
}
}
But, as I already wrote, I don't need a random y-axis, just x-axis.
Maybe you can help. Thanks for your help.
Edit: live-server-data.php
<?php
// Set the JSON header
header("Content-type: text/json");
include "config.php";
$SQL1 = "SELECT * FROM Prices WHERE Ticker ='TSLA'";
$result1 = mysql_query($SQL1);
while ($row = mysql_fetch_array($result1)) {
$data1[] = $row['Close'];
}
// The x value is the current JavaScript time, which is the Unix time multiplied
// by 1000.
$x = time() * 1000;
// The y value is a random number
$y = $data1;
// Create a PHP array and echo it as JSON
$ret = array($x, $y);
echo json_encode($ret);
?>
The value "Close" is decimal 24,4.
