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117 lines
5.5 KiB
117 lines
5.5 KiB
<!DOCTYPE html>
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<html lang="en"><head>
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<meta charset="utf-8">
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<meta http-equiv="X-UA-Compatible" content="IE=edge">
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<meta name="description" content="">
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<link rel="icon" HREF="favicon.ico">
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<title>Data - vis.js - A dynamic, browser based visualization library.</title>
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<!-- Bootstrap core CSS -->
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<link href="../css/bootstrap.css" rel="stylesheet">
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<body onload="prettyPrint();">
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<div class="navbar-wrapper">
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<a class="navbar-brand hidden-sm" href="./index.html">vis.js</a>
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<ul class="nav navbar-nav">
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<li><a href="http://www.visjs.org/index.html#modules">Modules</a></li>
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src="../img/external-link-icons/external-link-icon-white.png"></a>
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<li><a href="http://www.visjs.org/blog.html">Blog</a></li>
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<li><a href="http://www.visjs.org/index.html#contribute">Contribute</a></li>
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<li><a href="http://www.visjs.org/featureRequests.html">Feature requests</a></li>
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<li><a href="http://www.visjs.org/index.html#licenses">License</a></li>
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</ul>
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</div>
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</div>
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</nav>
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</div>
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</div>
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<a href="https://github.com/almende/vis" class="hidden-xs hidden-sm hidden-md"><img style="position: absolute; top: 0; right: 0; border: 0;" src="https://camo.githubusercontent.com/38ef81f8aca64bb9a64448d0d70f1308ef5341ab/68747470733a2f2f73332e616d617a6f6e6177732e636f6d2f6769746875622f726962626f6e732f666f726b6d655f72696768745f6461726b626c75655f3132313632312e706e67" alt="Fork me on GitHub" data-canonical-src="https://s3.amazonaws.com/github/ribbons/forkme_right_darkblue_121621.png"></a>
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<div class="container full">
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<h1>Data</h1>
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<p>
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One of the starting points of the visualizations of vis.js is that they can deal with dynamic data, and allow manipulation of the data. To enable this, vis.js includes a flexible key/value based <code>DataSet</code> and <code>DataView</code> to handle unstructured JSON data.
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</p>
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<p>
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By providing a <code>DataSet</code> with data to the visualizations, they can subscribe on changes in the <code>DataSet</code> and automatically reflect the changes in their view. Changes in the data can be caused by a server pushing updates to a client, or by other interactive components in the web application. Vice versa, data can be manipulated in one of the visualizations. For example a REST-client can listen for changes and automatically write changes to the server. Or changes can be propagated to other parts of the web application.
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</p>
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<h2>DataSet</h2>
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<p>
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A <code>DataSet</code> can be used to store JSON objects by id. Objects can be added, updated and removed from the DatSet, and one can subscribe to changes in the <code>DataSet</code>.
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The data in the <code>DataSet</code> can be filtered and ordered, and fields (like
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dates) can be converted to a specific type. Data can be normalized when
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appending it to the <code>DataSet</code> as well.
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</p>
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<p>
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<a href="dataset.html">Go to the documentation of DataSet</a>
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</p>
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<h2>DataView</h2>
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<p>
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A <code>DataView</code> offers a filtered and/or formatted view on a DataSet.
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One can subscribe to changes in a <code>DataView</code>, and easily get filtered or
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formatted data without having to specify filters and field types all
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the time.
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</p>
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<p>
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<a href="dataview.html">Go to the documentation of DataView</a>
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</p>
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</div>
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