Pie Chart with Legend
Legends are great for adding context to charts and can even replace labels in busier visualizations. Additionally, in amCharts legend items can act as toggles for the series in the chart (try clicking on the legend in this demo). And you get all of that functionality with no extra code.
Key implementation details
We just add a Legend to the chart’s children and then set data on it to our series data. And that’s it.
Related tutorials
Demo source
<!-- Styles -->
<style>
#chartdiv {
width: 100%;
height: 500px;
}
</style>
<!-- Resources -->
<script src="https://cdn.amcharts.com/lib/5/index.js"></script>
<script src="https://cdn.amcharts.com/lib/5/percent.js"></script>
<script src="https://cdn.amcharts.com/lib/5/themes/Animated.js"></script>
<!-- Chart code -->
<script>
am5.ready(function() {
// Create root element
// https://www.amcharts.com/docs/v5/getting-started/#Root_element
var root = am5.Root.new("chartdiv");
// Set themes
// https://www.amcharts.com/docs/v5/concepts/themes/
root.setThemes([
am5themes_Animated.new(root)
]);
// Create chart
// https://www.amcharts.com/docs/v5/charts/percent-charts/pie-chart/
var chart = root.container.children.push(am5percent.PieChart.new(root, {
layout: root.verticalLayout
}));
// Create series
// https://www.amcharts.com/docs/v5/charts/percent-charts/pie-chart/#Series
var series = chart.series.push(am5percent.PieSeries.new(root, {
valueField: "value",
categoryField: "category"
}));
// Set data
// https://www.amcharts.com/docs/v5/charts/percent-charts/pie-chart/#Setting_data
series.data.setAll([
{ value: 10, category: "One" },
{ value: 9, category: "Two" },
{ value: 6, category: "Three" },
{ value: 5, category: "Four" },
{ value: 4, category: "Five" },
{ value: 3, category: "Six" },
{ value: 1, category: "Seven" },
]);
// Create legend
// https://www.amcharts.com/docs/v5/charts/percent-charts/legend-percent-series/
var legend = chart.children.push(am5.Legend.new(root, {
centerX: am5.percent(50),
x: am5.percent(50),
marginTop: 15,
marginBottom: 15
}));
legend.data.setAll(series.dataItems);
// Play initial series animation
// https://www.amcharts.com/docs/v5/concepts/animations/#Animation_of_series
series.appear(1000, 100);
}); // end am5.ready()
</script>
<!-- HTML -->
<div id="chartdiv"></div>