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>