I decided to integrate the Treemap control (ie: Heatmap) from Microsoft Research into my .NET client-side framework that my company now uses. As a demo, I emulated the heatmap found on the Smart Money site. The free Microsoft heatmap was fairly easy to develop for, and in almost no time, I had real-time trades streaming from KDB+ into the framework, with the trade data displayed in the heatmap.
Given what we have, it may be more difficult to rationalize paying that big yearly license fee to Panopticon.
The Bubble Chart control is worthwhile too.
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