Extension:Pchart4mw - MediaWiki
www.mediawiki.org/wiki/Extension:Pchart4mw
From the page
Saved with the link. Notes from 2007 to 2016 are mostly the page's own words, so this is probably an excerpt.
This PHP Chart for MediaWiki extension (pchart4mw)[1] allows you to visualize your data with charts like line-, bar-, pie-, radar-, scatter- and bubble charts. It uses the (free) PHP Chart library pChart[2] to produce the charts. It allows for 2- or 3-dimensional charts, which are all within the potential of the pChart library. The charts are based on your data from the wiki page.