vis.js is a dynamic, browser-based visualization library
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<!DOCTYPE HTML>
<html>
<head>
<title>Graph2d | External legend Example</title>
<link href="../../dist/vis.css" rel="stylesheet" type="text/css" />
<style type="text/css">
body, html {
font-family: sans-serif;
}
.custom-style1 {
fill: #f2ea00;
fill-opacity:0;
stroke-width:2px;
stroke: #b3ab00;
}
.custom-style2 {
fill: #00a0f2;
fill-opacity:0;
stroke-width:2px;
stroke: #050092;
}
.custom-style3 {
fill: #00f201;
fill-opacity:0;
stroke-width:2px;
stroke: #029200;
}
path.custom-style3.fill {
fill-opacity:0.5 !important;
stroke: none;
}
.vis-graph-group0 {
fill:#4f81bd;
fill-opacity:0;
stroke-width:2px;
stroke: #4f81bd;
}
.vis-graph-group1 {
fill:#f79646;
fill-opacity:0;
stroke-width:2px;
stroke: #f79646;
}
.vis-graph-group2 {
fill: #8c51cf;
fill-opacity:0;
stroke-width:2px;
stroke: #8c51cf;
}
.vis-graph-group3 {
fill: #75c841;
fill-opacity:0;
stroke-width:2px;
stroke: #75c841;
}
.vis-graph-group4 {
fill: #ff0100;
fill-opacity:0;
stroke-width:2px;
stroke: #ff0100;
}
.vis-graph-group5 {
fill: #37d8e6;
fill-opacity:0;
stroke-width:2px;
stroke: #37d8e6;
}
.vis-graph-group6 {
fill: #042662;
fill-opacity:0;
stroke-width:2px;
stroke: #042662;
}
.vis-graph-group7 {
fill:#00ff26;
fill-opacity:0;
stroke-width:2px;
stroke: #00ff26;
}
.vis-graph-group8 {
fill:#ff00ff;
fill-opacity:0;
stroke-width:2px;
stroke: #ff00ff;
}
.vis-graph-group9 {
fill: #8f3938;
fill-opacity:0;
stroke-width:2px;
stroke: #8f3938;
}
.vis-fill {
fill-opacity:0.1;
stroke: none;
}
.vis-bar {
fill-opacity:0.5;
stroke-width:1px;
}
.vis-point {
stroke-width:2px;
fill-opacity:1.0;
}
.vis-legend-background {
stroke-width:1px;
fill-opacity:0.9;
fill: #ffffff;
stroke: #c2c2c2;
}
.vis-outline {
stroke-width:1px;
fill-opacity:1;
fill: #ffffff;
stroke: #e5e5e5;
}
.vis-icon-fill {
fill-opacity:0.3;
stroke: none;
}
div.description-container {
float:left;
height:30px;
width:160px;
padding-left:5px;
padding-right:5px;
line-height: 30px;
}
div.icon-container {
float:left;
}
div.legend-element-container {
display:inline-block;
width:200px;
height:30px;
border-style:solid;
border-width:1px;
border-color: #e0e0e0;
background-color: #ffffff;
margin:4px;
padding:4px;
-webkit-touch-callout: none;
-webkit-user-select: none;
-khtml-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
cursor:pointer;
}
div.legend-element-container.hidden {
background-color: #d3e6ff;
}
svg.legend-icon {
width:30px;
height:30px;
}
div.external-legend {
position:relative;
margin-left: -5px;
width: 900px;
}
</style>
<script src="../../dist/vis.js"></script>
<script>(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)})(window,document,'script','//www.google-analytics.com/analytics.js','ga');ga('create', 'UA-61231638-1', 'auto');ga('send', 'pageview');</script></head>
<body>
<h2>Graph2d | External custom legend</h2>
<div style="width:800px; font-size:14px; text-align: justify;">
This example shows how to create an external custom legend using the getLegend function. We use normal JavaScript to show and hide the
groups by updating the dataset.
</div>
<br />
<div id="Legend" class="external-legend"></div>
<div id="visualization"></div>
<script type="text/javascript">
// create a dataSet with groups
var names = ['SquareShaded', 'Bargraph', 'Blank', 'CircleShaded'];
var groups = new vis.DataSet();
groups.add({
id: 0,
content: names[0],
className: 'custom-style1',
options: {
drawPoints: {
style: 'square' // square, circle
},
shaded: {
orientation: 'bottom' // top, bottom
}
}});
groups.add({
id: 1,
content: names[1],
className: 'custom-style2',
options: {
style:'bar',
drawPoints: {style: 'circle',
size: 10
}
}});
groups.add({
id: 2,
content: names[2],
options: {
yAxisOrientation: 'right', // right, left
drawPoints: false
}
});
groups.add({
id: 3,
content: names[3],
className: 'custom-style3',
options: {
yAxisOrientation: 'right', // right, left
drawPoints: {
style: 'circle' // square, circle
},
shaded: {
orientation: 'top' // top, bottom
}
}});
var container = document.getElementById('visualization');
var items = [
{x: '2014-06-12', y: 0 , group: 0},
{x: '2014-06-13', y: 30, group: 0},
{x: '2014-06-14', y: 10, group: 0},
{x: '2014-06-15', y: 15, group: 1},
{x: '2014-06-16', y: 30, group: 1},
{x: '2014-06-17', y: 10, group: 1},
{x: '2014-06-18', y: 15, group: 1},
{x: '2014-06-19', y: 52, group: 1},
{x: '2014-06-20', y: 10, group: 1},
{x: '2014-06-21', y: 20, group: 2},
{x: '2014-06-22', y: 600, group: 2},
{x: '2014-06-23', y: 100, group: 2},
{x: '2014-06-24', y: 250, group: 2},
{x: '2014-06-25', y: 300, group: 2},
{x: '2014-06-26', y: 200, group: 3},
{x: '2014-06-27', y: 600, group: 3},
{x: '2014-06-28', y: 1000, group: 3},
{x: '2014-06-29', y: 250, group: 3},
{x: '2014-06-30', y: 300, group: 3}
];
var dataset = new vis.DataSet(items);
var options = {
dataAxis: {showMinorLabels: false},
start: '2014-06-09',
end: '2014-07-03'
};
var graph2d = new vis.Graph2d(container, items, groups, options);
/**
* this function fills the external legend with content using the getLegend() function.
*/
function populateExternalLegend() {
var groupsData = groups.get();
var legendDiv = document.getElementById("Legend");
legendDiv.innerHTML = "";
// get for all groups:
for (var i = 0; i < groupsData.length; i++) {
// create divs
var containerDiv = document.createElement("div");
var iconDiv = document.createElement("div");
var descriptionDiv = document.createElement("div");
// give divs classes and Ids where necessary
containerDiv.className = 'legend-element-container';
containerDiv.id = groupsData[i].id + "_legendContainer"
iconDiv.className = "icon-container";
descriptionDiv.className = "description-container";
// get the legend for this group.
var legend = graph2d.getLegend(groupsData[i].id,30,30);
// append class to icon. All styling classes from the vis.css have been copied over into the head here to be able to style the
// icons with the same classes if they are using the default ones.
legend.icon.setAttributeNS(null, "class", "legend-icon");
// append the legend to the corresponding divs
iconDiv.appendChild(legend.icon);
descriptionDiv.innerHTML = legend.label;
// determine the order for left and right orientation
if (legend.orientation == 'left') {
descriptionDiv.style.textAlign = "left";
containerDiv.appendChild(iconDiv);
containerDiv.appendChild(descriptionDiv);
}
else {
descriptionDiv.style.textAlign = "right";
containerDiv.appendChild(descriptionDiv);
containerDiv.appendChild(iconDiv);
}
// append to the legend container div
legendDiv.appendChild(containerDiv);
// bind click event to this legend element.
containerDiv.onclick = toggleGraph.bind(this,groupsData[i].id);
}
}
/**
* This function switchs the visible option of the selected group on an off.
* @param groupId
*/
function toggleGraph(groupId) {
// get the container that was clicked on.
var container = document.getElementById(groupId + "_legendContainer")
// if visible, hide
if (graph2d.isGroupVisible(groupId) == true) {
groups.update({id:groupId, visible:false});
container.className = container.className + " hidden";
}
else { // if invisible, show
groups.update({id:groupId, visible:true});
container.className = container.className.replace("hidden","");
}
}
populateExternalLegend()
</script>
</body>
</html>