Google Charts - Google Charts tutorial - Basic Trendlines - chart js - google graphs - google charts examples




What is Trendlines?

  • A trendline is a line superimposed on a chart revealing the overall direction of the data.
  • Google Charts can automatically generate trendlines for Scatter Charts, Bar Charts, Column Charts, and Line Charts.
  • Google Charts supports three types of trendlines: linear, polynomial, and exponential.

Configurations:

  • We've used trendlines configuration to show trendlines diagram.
var options = {
   trendlines: { 0: {} }    // Draw a trendline for data series 0.
};
Clicking "Copy Code" button to copy the code. From - google charts tutorial - team

Example:

googlecharts-trendlines-basic.html

 Tryit
<html>
<head>
<title>Google Charts</title>
   <script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
   <script type="text/javascript" src="https://www.google.com/jsapi"></script>
   <script type="text/javascript">
     google.charts.load('current', {packages: ['corechart']});     
   </script>
</head>
<body>
<div id="container" style="width: 550px; height: 400px; margin: 0 auto"></div>
<script language="JavaScript">
function drawChart() {
   // Define the chart to be drawn.
   var data = new google.visualization.DataTable();
   data.addColumn('number', 'Age');
   data.addColumn('number', 'Weight');
   data.addRows([
      [ 6,      10],
      [ 3,      5.5],
      [ 8,     12],
      [ 4,      5],
      [ 3,      3.5],
      [ 5.5,    6]
   ]);
   
   // Set chart options
   var options = {'title':'Age vs Weight',
      'width':550,
      'height':400,
	  'legend': 'none',
	   trendlines: { 0: {} }    // Draw a trendline for data series 0.
   };

   // Instantiate and draw the chart.
   var chart = new google.visualization.ScatterChart(document.getElementById('container'));
   chart.draw(data, options);
}
google.charts.setOnLoadCallback(drawChart);
</script>
</body>
</html>
Clicking "Copy Code" button to copy the code. From - google charts tutorial - team

Output:


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