This is an early version of a MediaWiki extension that allows Wolfram CDF files to be shown in wiki pages.

Installing

To install the extension, you must first obtain a copy of the wolfram_cdf extension (either by downloading a snapshot, or checking it out of git). Once you have the extension:

• Place the wolfram_cdf directory in your mediawiki/extensions directory

• add the following to the end of your LocalSettings.php

    require_once("$IP/extensions/wolfram_cdf/CDF.php");
  

• if you want to enable the ability to show external .cdf files (note there may be security issues in doing this), add the following to your LocalSettings.php after the above

    $wgCDFAllowExternalURLs = true;
  

• if you want to display a 'click here to download this CDF' link below each CDF box, add the following to your LocalSettings after the above:

    $wgCDFShowDownloadLink = true;
  

Note that, in order to actually use .cdf files, you will need to ensure that file uploads are enabled ($wgEnableUploads is true) and cdf extensions are allowed. For example:

$wgEnableUploads  = true;
$wgUseImageMagick = true;
$wgFileExtensions = array( 'png', 'gif', 'jpg', 'jpeg', 'txt', 'cdf' );

You may also need to either ensure that your webserver serves up .cdf files as application/x-netcdf, or modify $IP/includes/mime.types to contain

text/plain txt cdf

Using

The basic syntax for the cdf extension is:

<cdf width="width in pixels" height="height in pixels">filename</cdf>

When specifying the filename, you do not need to include the File: namespace in the filename - it will work with or without it. If enabled, you may also provide an absolute URL instead of a filename to show a CDF file from another server.

Examples:

<cdf width="650" height="400">SomeExample.cdf</cdf>
<cdf width="565" height="589">http://demonstrations.wolfram.com/HobermanCube/HobermanCube.cdf</cdf>

Note that the second example above will only work if $wgCDFAllowExternalURLs is set to true; the default is to not show external URLs.