20,836 reputation
42568
bio website none
location Ann Arbor, MI
age 76
visits member for 2 years
seen 8 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 its classical Greek synthetic form and in its more modern analytical/transformational form.


Jul
27
answered Providing a color function for ListPointPlot3D
Jul
27
revised Providing a color function for ListPointPlot3D
Moderate clean-up
Jul
27
revised Improving the speed of evaluating Table with nested functions
Improved formatting
Jul
26
revised TrueQ returning False on true statement
edited title
Jul
26
comment TrueQ returning False on true statement
I get False from V9, but True from V10.
Jul
26
revised How can I mend this broken heart?
Improved formatting
Jul
26
revised NDSolve: EventAction list specification using Table fails
edited title; edited tags
Jul
25
answered Help me understand what Map[Max[#] - Min[#] &, ttt, {2}] does
Jul
25
revised Help me understand what Map[Max[#] - Min[#] &, ttt, {2}] does
Major clean-up
Jul
25
revised Spike train representation
Improved formatting; made English more idiomatic
Jul
25
revised Suppressing reduction in fraction box size in multi-level fractions
edited title
Jul
25
revised Suppressing reduction in fraction box size in multi-level fractions
Added a second way of solving the problem
Jul
25
answered Suppressing reduction in fraction box size in multi-level fractions
Jul
24
revised Converting hierarchies of rules to associations
added 2 characters in body; edited title
Jul
24
revised Approximate a function of four variables with a rational polynomial
Made English more idiomatic.
Jul
24
reviewed Close Mathematica 10 : Where is the Mathematica Book?
Jul
24
comment Manipulate inside a function definition slows down when passed a large data set
I didn't use Hold. I gave your function the attribute HoldFirst, which is something different. I did it because Manipulate has the attribute HoldAll, which made me suspicious about passing in the data by value. I was acting on intuition, not out of a deep understanding of Manipulate internals.
Jul
24
reviewed Close How to make Mathematica script executable?
Jul
24
answered Manipulate inside a function definition slows down when passed a large data set
Jul
24
revised Manipulate inside a function definition slows down when passed a large data set
Improved formatting