Extension:WolframCDF

MediaWiki extensions manual

WolframCDF Release status: beta
Implementation	Tag
Description	Shows Wolfram CDF files in wiki pages.
Author(s)	TWtalk
Latest version	0.2.1 (Goodge Street) (2012-04-25)
MediaWiki	1.18+ (requires 'position' support in ResourceLoader)
Parameters $wgCDFAllowExternalURLs $wgCDFShowDownloadLink
Tags ‎<cdf>
Hooks used ParserFirstCallInit
Licence	GNU General Public License 3.0 or later
Download	GitHub: project page git repository URL commit history Note: No localisation updates are provided by translatewiki.net .

Description

Allows Wolfram CDF files (interactive content generated by Wolfram Mathematica) to be shown in wiki pages.

Usage

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.

Download instructions

To download the extension, you may obtain a zip of the latest code from the download link in the infobox. Alternatively, you may clone the git repository with the following command:

git clone git://github.com/TheWatcher/wolfram_cdf.git

Installation

To install this extension, place the wolfram_cdf directory in your extensions directory, and add the following to LocalSettings.php :

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

Note that, in order to actually upload and 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, if that is not possible, you may need to modify $IP/includes/mime.types to contain

text/plain txt cdf

This should only be done in exceptional circumstances, however!

Parameters

The following parameters can be set in the LocalSettings.php file:

$wgCDFAllowExternalURLs

If this is set to true (the default is false) then <cdf> tags may contain URLs to load .cdf files from other web servers. This should be enabled with caution, as it may have security implications!

$wgCDFShowDownloadLink

If set to true (the default is false), the extension will place a 'Click here to download this CDF' link beneath each CDF box to allow users to save a copy of the CDF for offline use.

For example, your LocalSettings.php file may contain:

require_once("$IP/extensions/wolfram_cdf/CDF.php");
$wgCDFAllowExternalURLs = false;
$wgCDFShowDownloadLink = true;

The following css classes can also be used to apply styling to the html generated by this extension:

div.cdf

Each CDF box is contained within a div with this class

div.cdflink

If $wgCDFShowDownloadLink is true, the CDF download link is placed in a div with this class.