The screenshot looks a lot like the Tradestation ProbabilityMap.

If you have Tradestation you can access or modify the Probability Density Logic that it uses via Easylanguage code.

I'm not familiar with the Prob Map capabilities of the latest version of Tradestation, but earlier versions came with "Normal Range" and "Normal Distribution" Prob Maps built in. These maps assume the data follows a "Normal" distribution. ...and markets do not have Normal distributions.

One author wrote that the Probability function in these "needs to be replaced w/ one that reflects actual market activity" which could be a daunting task for anyone but an advanced programmer.

check these out for more info:
http://www.google.com/search?hl=en&l...th&btnG=Search