16,544 reputation
41959
bio website none
location Ann Arbor, MI
age 76
visits member for 1 year, 9 months
seen 6 hours ago

I am a retired software developer. I retired at the end of 2003 and since then my computer programming activities have been for recreational purposes. I find Mathematica excellent for that.

I started using Mathematica in 1997 (Ver. 3). I am currently using Ver. 9. Although I have used Mathematica for all kinds of stuff, I use it mostly to pursue my long standing interest in Euclidean geometry, both in the classical Greek synthetic form and in the more modern analytical form.


Jul
22
revised Get the last line from from each of a large number of files, transform them, and write all results to a single new file
Minor clean-up
Jul
22
revised How to draw a 3D convex hull of a set of points with styling
Moderate clean-up
Jul
22
revised Converting datasets to nested lists
edited title
Jul
22
answered Converting datasets to nested lists
Jul
22
answered HoldForm doesn't hold form
Jul
22
comment HoldForm doesn't hold form
Yes, and it's a nasty one. There is probably a lot of existing code broken by this behavior. And it's worse than even you think. Try substituting Hold[x = 3] for HoldForm[x = 3]. Global x still set to 3 after evaluation.
Jul
22
comment HoldForm doesn't hold form
I suggest you report this to WRI tech support. Maybe WRI broke HoldForm when they added the new Inactivate.
Jul
21
reviewed Reviewed Mathematica unable to solve equation numerically while Wolfram|Alpha can
Jul
21
comment Mathematica unable to solve equation numerically while Wolfram|Alpha can
You didn't ask Mathematica for a numerical solution, you asked for a symbolic one.
Jul
21
revised Mathematica unable to solve equation numerically while Wolfram|Alpha can
added 6 characters in body
Jul
21
revised How to label a histogram operating on a dataset?
edited title
Jul
21
revised How to label a histogram operating on a dataset?
Added additional code hoping to satisfy objection raised in comment
Jul
21
reviewed Leave Open Taking inverse powers of an expression to that power
Jul
21
reviewed Close Mathematica policy for correctness of results
Jul
21
comment Mathematica policy for correctness of results
This question appears to be off-topic because the answer is easily found in the EULA.
Jul
21
reviewed No Action Needed Stochastic Simulation using the Gillespie algorithm
Jul
21
comment Trouble outputting Plot
First, learn how Module evaluates the assignments made in its first argument. For example, study Cliar@a; Module[{a = 42, b = a}, {a, b}]. When you understand why this returns {42, a}, you will have taken a first step to toward understanding one of the problems with your code. Also, become aware that E is a reserved symbol, a short form for Exp[1].
Jul
21
revised Convolving data set with gaussian profile
Moderate clean-up
Jul
21
reviewed Edit and Reopen Save state of buttons, sliders, listpicker in enterpriseCDF?
Jul
21
revised Save state of buttons, sliders, listpicker in enterpriseCDF?
Improved formatting