Show JSON on a google chart in real time - Javascript Google Chart

Javascript examples for Google Chart:Chart Configuration

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Description

Show JSON on a google chart in real time

Demo Code

ResultView the demo in separate window 

<html>
   <head> 
      <meta name="viewport" content="width=device-width, initial-scale=1"> 
      <script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script> 
      <script type="text/javascript">
    window.onload=function(){//from www  .j a  v  a  2  s .c o  m
google.charts.load('current', {
  'packages': ['gauge']
});
google.charts.setOnLoadCallback(drawGauge);
var gaugeOptions = {
  min: 0,
  max: 280,
  yellowFrom: 200,
  yellowTo: 250,
  redFrom: 250,
  redTo: 280,
  minorTicks: 5
};
var gauge;
var gaugeData;
function drawGauge() {
  gaugeData = new google.visualization.DataTable();
  gaugeData.addColumn('number', 'Temperature');
  gaugeData.addColumn('number', 'Humidity');
  gaugeData.addRows(2);
  gaugeData.setCell(0, 0, 120);
  gaugeData.setCell(0, 1, 80);
  gauge = new google.visualization.Gauge(document.getElementById('gauge_div'));
  gauge.draw(gaugeData, gaugeOptions);
  repeat();
}
function repeat() {
  var dir = Math.floor((Math.random() * 10) + 1);
  gaugeData.setValue(0, 0, dir * 25);
  gaugeData.setValue(0, 1, dir * 20);
  gauge.draw(gaugeData, gaugeOptions);
  setTimeout(repeat, 5000);
}
    }

      </script> 
   </head> 
   <body> 
      <div id="gauge_div" style="width:280px; height: 140px;"></div>  
   </body>
</html>

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