LOD Visualisation using JavaScript

Graphical Representation:

jQuery Sparkline
jQuery plugin generates sparklines (small inline charts) directly in the browser using data supplied either inline in the HTML, or via javascript.

Protovis

D3.js

gRaphaël

smoothiecharts

Processing.js

Geo Information :

http://openlayers.org/
Javascript mapping abstraction library mapstraction

Javascript 3D Engine
three.js

SVG

Polymaps

A Simple Linked Data and JavaScript Tutorial

http://dailyjs.com/2010/11/26/linked-data-and-javascript/