In order to use jQuery's AJAX function, you need to include jQuery:
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"
></script>
The try this:
function drawChart() {
var data = google.visualization.arrayToDataTable([
['Label', 'Value'],
['Flow', 0]
]);
var options = {
width: 400,
height: 120,
redFrom: 90,
redTo: 100,
yellowFrom: 75,
yellowTo: 90,
minorTicks: 5
};
var chart = new
google.visualization.Gauge(document.getElementById('chart_div'));
chart.draw(data, options);
// dynamic update, randomly assign new values and redraw
function getData () {
$.ajax({
url: 'Gauge.php',
success: function (response) {
data.setValue(0, 1, response);
chart.draw(data, options);
setTimeout(getData, 5000);
}
});
}
getData();
}
google.load('visualization', '1', {packages: ['gauge'], callback:
drawChart});
On Thursday, August 29, 2013 3:36:06 AM UTC-4, Nallacheruvu STP wrote:
>
> Where to incorporate that function in following code and please correct
> the code if necessary.
>
>
> <html>
> <head>
> <script type='text/javascript' src='
> https://www.google.com/jsapi'></script>
> <script type="text/javascript">
> google.load('visualization', '1', {
> packages: ['gauge']
> });
> google.setOnLoadCallback(drawChart);
>
>
>
> function drawChart() {
> var data = google.visualization.arrayToDataTable([
> ['Label', 'Value'],
> *['Flow', 0]*
> ]);
>
> var options = {
> width: 400,
> height: 120,
> redFrom: 90,
> redTo: 100,
> yellowFrom: 75,
> yellowTo: 90,
> minorTicks: 5
> };
> var chart = new
> google.visualization.Gauge(document.getElementById('chart_div'));
> chart.draw(data, options);
>
> // dynamic update, randomly assign new values and redraw
>
>
> *setInterval(function() {*
> * var flow = $.ajax({url: 'Gauge.php', dataType: 'text', async:
> false}).responseText;*
> * data.setValue(0, 1, flow);*
> * chart.draw(data, options);*
> * }, 5000);*
> *
> *
> *
> *
> </script>
> </head>
> <body>
> <div id='chart_div'></div>
> </body>
> </html>
>
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