highcharts Gauge live data with ajax - highcharts

Question

I have used highcharts library in my project and i have to update Gauge every 1 second with data creating by PHP file .
The highcharts Gauge Example have some code to make it trigger every 1 second , but i cant found some thing like This Link to get data from PHP file with Ajax Technic .
Anyone have any idea to implement this scenario and apply Ajax to this chart ?

Answer 1

You not found example because it is generic, see how it can be done with $.post():
http://jsfiddle.net/oceog/zpwdp/
$(function () {
var chart = new Highcharts.Chart({
chart: {
renderTo: 'container',
type: 'gauge',
plotBackgroundColor: null,
plotBackgroundImage: null,
plotBorderWidth: 0,
plotShadow: false
},
title: {
text: 'Speedometer'
},
pane: {
startAngle: -150,
endAngle: 150,
background: [{
backgroundColor: {
linearGradient: { x1: 0, y1: 0, x2: 0, y2: 1 },
stops: [
[0, '#FFF'],
[1, '#333']
]
},
borderWidth: 0,
outerRadius: '109%'
}, {
backgroundColor: {
linearGradient: { x1: 0, y1: 0, x2: 0, y2: 1 },
stops: [
[0, '#333'],
[1, '#FFF']
]
},
borderWidth: 1,
outerRadius: '107%'
}, {
// default background
}, {
backgroundColor: '#DDD',
borderWidth: 0,
outerRadius: '105%',
innerRadius: '103%'
}]
},
// the value axis
yAxis: {
min: 0,
max: 200,
minorTickInterval: 'auto',
minorTickWidth: 1,
minorTickLength: 10,
minorTickPosition: 'inside',
minorTickColor: '#666',
tickPixelInterval: 30,
tickWidth: 2,
tickPosition: 'inside',
tickLength: 10,
tickColor: '#666',
labels: {
step: 2,
rotation: 'auto'
},
title: {
text: 'km/h'
},
plotBands: [{
from: 0,
to: 120,
color: '#55BF3B' // green
}, {
from: 120,
to: 160,
color: '#DDDF0D' // yellow
}, {
from: 160,
to: 200,
color: '#DF5353' // red
}]
},
series: [{
name: 'Speed',
data: [80],
tooltip: {
valueSuffix: ' km/h'
}
}]
},
// Add some life
function (chart) {
setInterval(function () {
$.post('/echo/json/',{
json: JSON.stringify({
//This is just a sample data, see comments after code to real world usage
inc: Math.round((Math.random() - 0.5) * 20)
})},
function(data) {
var point = chart.series[0].points[0],
newVal,
inc = data.inc;
newVal = point.y + inc;
if (newVal < 0 || newVal > 200) {
newVal = point.y - inc;
}
point.update(newVal);
},"json");
}, 3000);
});
});​
In real world you use something like
$.post('new_data.php',{last_time: last_time},function(data) {
//set point here
},"json")
in new_data.php you do something like
$data=get_data($last_time);
echo json_encode($data);
exit;