Render an External Legend in the Chart
Environment
| Product | Progress® Kendo UI® Chart for jQuery |
| Operating System | Windows 10 64bit |
| Visual Studio Version | Visual Studio 2017 |
| Preferred Language | JavaScript |
Description
How can I render the legend outside the Kendo UI Chart?
Solution
The following example demonstrates how to achieve this behavior by using HTML.
<style>
.legend-item
{
font: 12px sans-serif;
margin: 2px;
cursor:pointer;
}
.legend-item .legend-marker
{
display:inline-block;
width:8px;
height:8px;
}
</style>
<script id="legendItemTemplate" type="text/kendo">
<span class="legend-item" data-bind="events: {mouseenter: onMouseEnter, mouseleave: onMouseLeave, click: onClick}" >
<span class="legend-marker" data-bind="style:{background: markerColor}">
</span>
<span>
#:name#
</span>
</span>
</script>
<div data-bind="source:series" data-template="legendItemTemplate" id="legend">
</div>
<div id='chart'></div>
<script>
function createChart(selector) {
$(selector).kendoChart({
title: {
text: "Gross domestic product growth /GDP annual %/"
},
legend: {
visible: false
},
chartArea: {
background: ""
},
seriesDefaults: {
type: "line",
style: "smooth"
},
series: [{
name: "India",
data: [3.907, 7.943, 7.848, 9.284, 9.263, 9.801, 3.890, 8.238, 9.552, 6.855]
}, {
name: "World",
data: [1.988, 2.733, 3.994, 3.464, 4.001, 3.939, 1.333, -2.245, 4.339, 2.727]
}, {
name: "Russian Federation",
data: [4.743, 7.295, 7.175, 6.376, 8.153, 8.535, 5.247, -7.832, 4.3, 4.3]
}, {
name: "Haiti",
data: [-0.253, 0.362, -3.519, 1.799, 2.252, 3.343, 0.843, 2.877, -5.416, 5.590]
}],
valueAxis: {
labels: {
format: "{0}%"
},
line: {
visible: false
},
axisCrossingValue: -10
},
categoryAxis: {
categories: [2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011],
majorGridLines: {
visible: false
}
},
tooltip: {
visible: true,
format: "{0}%",
template: "#= series.name #: #= value #"
}
});
}
$(document).ready(function () {
createChart("#chart");
var chart = $("#chart").data("kendoChart");
var viewModel = kendo.observable({
series: chart.options.series,
onMouseEnter: function (e) {
var name = e.data.name;
var series = chart.findSeriesByName(name);
series.toggleHighlight(true);
},
onMouseLeave: function (e) {
var name = e.data.name;
var series = chart.findSeriesByName(name);
series.toggleHighlight(false);
},
onClick: function (e) {
var name = e.data.name;
var series = chart.findSeriesByName(name);
if(e.data.visible){
series.toggleVisibility(false);
}
else{
series.toggleVisibility(true);
}
e.data.set("visible", !e.data.visible);
},
markerColor: function(e) {
return e.get("visible") ? e.color : "grey";
}
});
kendo.bind($("#legend"), viewModel);
});
</script>