Google Charts - Google Charts tutorial - Polynomial Trendlines - chart js - google graphs - google charts examples
What is Polynomial Trendlines?
- A polynomial trendline is a curved line that is used when data fluctuates.
- It is useful, for example, for analyzing gains and losses over a large data set.
- The order of the polynomial can be determined by the number of fluctuations in the data or by how many bends (hills and valleys) appear in the curve.
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Polynomial Trendlines in Google Charts
- A trendline is a line covered on a chart illuminating 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.
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Configurations
- You have used trendlines configuration to show trendlines diagram.
Syntax
var options = {
trendlines: { 0: {
type: 'polynomial',
degree: 3,
visibleInLegend: true,
}
} // Draw a trendline for data series 0.
};Clicking "Copy Code" button to copy the code. From - google charts tutorial - team
Sample Code
googlecharts-trendlines-polynomial.html
Tryit<html>
<head>
<title>Google Charts Tutorial - Wikitechy</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: 650px; height: 500px; 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([
[ 9, 13],
[ 5, 6.5],
[ 12, 15],
[ 5, 6],
[ 4, 4.5],
[ 7.5, 8]
]);
// Set chart options
var options = {'title':'Age vs Weight',
'width':650,
'height':500,
'legend': 'none',
trendlines: { 0: {
type: 'polynomial',
degree: 3,
visibleInLegend: true,
}
} // 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>