My name is John Tolle. I'm an engineer and statistical consultant in Houston who has also done a lot of computer programming.

I currently do statistical analysis with R and Stata, and do some "data-science" programming as needed.

A few years ago, I wrote a set of Excel VBA libraries in order to build spreadsheet models like "real" software - that is, as modular, testable, maintainable computer programs. They extended Excel with a true functional programming system with a syntax very close to native Excel formulas. (This was very valuable to my former employer! Please see the Background section of my Stack Overflow Careers profile for more information.)

The best way to reach me is by email:

email = [name]@[domain]
name = tolle.john
domain = gmail.com
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