This example shows how to add a legend to a Chart.
Adding a legend to a Chart instance
When a chart has multiple series, a legend can allow the user to identify each series more easily. The charts module includes a charts-legend submodule. Specifying
charts-legend in you use statement allows you to add a legend to a Chart instance. A legend is added to a chart through the legend attribute. This attribute is an
object containing value pairs for the attributes of a legend. All available attributes for the legend are outlined here. In the
example below, we will add a legend to a chart instance.
YUI().use('charts-legend', function (Y)
{
var myDataValues = [
{category:"5/1/2010", miscellaneous:2000, expenses:3700, revenue:2200},
{category:"5/2/2010", miscellaneous:50, expenses:9100, revenue:100},
{category:"5/3/2010", miscellaneous:400, expenses:1100, revenue:1500},
{category:"5/4/2010", miscellaneous:200, expenses:1900, revenue:2800},
{category:"5/5/2010", miscellaneous:5000, expenses:5000, revenue:2650}
];
var myChart = new Y.Chart({
legend: {
position: "right",
width: 300,
height: 300,
styles: {
hAlign: "center",
hSpacing: 4
}
},
axes: {
category: {
keys: ["date"],
type: "category",
styles: {
label: {
rotation: -90
}
}
}
},
categoryKey: "date",
dataProvider:myDataValues,
horizontalGridlines: true,
verticalGridlines: true,
render:"#mychart"
});
});