Hi.
I faintly remember someone mentioned Gantt diagrams/charts here so here it is: http://www.mediawiki.org/wiki/Extension:JSWikiGantt I must warn you that if you want to look at the code, please close your eyes when you look at jsgantt.js ;-). This must have been a fun project some years ago (there are some really interesting concepts there), but is rather hard in modifying e.g. to allow more then one diagram per page. I'll probably rewrite this someday. I was thinking about either rendering this to SVG or on canvas rather then plain HTML. Any thoughts on that?
We use this extension at work to plan/visualize small development sprints by exporting tasks from Flyspray to Gantt XML. This is a bit specific as Flyspray doesn't really have time interval field but I could probably share this code if anyone wanted.
And here is an extension that uses Gantt for something a bit different: http://www.mediawiki.org/wiki/Extension:JobSchEd
We use this to build something that on might call an out of office schedule.
Technically this extension is actually just a JavaScript that gets build dynamically from JS modules by PHP and included in the header. Could probably be used more generally, but as RL is now in 1.17 then this is probably a bit less useful then it was.
Cheers, Nux.