# vis.js documentation

Vis.js is a dynamic, browser based visualization library. The library is designed to be easy to use, handle large amounts of dynamic data, and enable manipulation of the data.

The library is developed by Almende B.V.

## Components

Vis.js contains of the following components:

- DataSet. A flexible key/value based data set. Add, update, and remove items. Subscribe on changes in the data set. A DataSet can filter and order items, and convert fields of items.
- DataView. A filtered and/or formatted view on a DataSet.
- Graph. Display a graph or network with nodes and edges.
- Timeline. Display different types of data on a timeline. The timeline and the items on the timeline can be interactively moved, zoomed, and manipulated.

(click for a larger view)

## Install

### npm

    npm install vis

### bower

    bower install vis

### download

Download the library from the website: http://visjs.org.

## Load

To load vis.js, include the javascript and css files of vis in your web page:

    <!DOCTYPE HTML>
    <html>
    <head>
      <script src="components/vis/vis.js"></script>
      <link href="components/vis/vis.css" rel="stylesheet" type="text/css" />
    </head>
    <body>
    <script type="text/javascript">
      // ... load a visualization
    </script>
    </body>
    </html>

or load vis.js using require.js:

    require.config({
      paths: {
        vis: 'path/to/vis',
      }
    });

    require(['vis'], function (math) {
      // ... load a visualization
    });

A timeline can be instantiated as follows. Other components can be created in a similar way.

    var timeline = new vis.Timeline(container, data, options);

Where `container` is an HTML element, `data` is an Array with data or a DataSet, and `options` is an optional object with configuration options for the component.

## Use

A basic example on using a Timeline is shown below. More examples can be found in the examples directory of the project.

    <!DOCTYPE HTML>
    <html>
    <head>
      <title>Timeline basic demo</title>

      <script src="components/vis/vis.js"></script>
      <link href="components/vis/vis.css" rel="stylesheet" type="text/css" />

      <style type="text/css">
        body, html {
          font-family: sans-serif;
        }
      </style>
    </head>
    <body>
    <div id="visualization"></div>

    <script type="text/javascript">
      var container = document.getElementById('visualization');
      var data = [
        {id: 1, content: 'item 1', start: '2013-04-20'},
        {id: 2, content: 'item 2', start: '2013-04-14'},
        {id: 3, content: 'item 3', start: '2013-04-18'},
        {id: 4, content: 'item 4', start: '2013-04-16', end: '2013-04-19'},
        {id: 5, content: 'item 5', start: '2013-04-25'},
        {id: 6, content: 'item 6', start: '2013-04-27'}
      ];
      var options = {};
      var timeline = new vis.Timeline(container, data, options);
    </script>
    </body>
    </html>

## License

Copyright (C) 2010-2014 Almende B.V.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.