19,819 reputation
42164
bio website none
location Ann Arbor, MI
age 76
visits member for 1 year, 11 months
seen 3 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.


Aug
20
revised Split matrix by all-zero columns
Added a second solution
Aug
20
answered Split matrix by all-zero columns
Aug
20
revised Split matrix by all-zero columns
added 4 characters in body
Aug
20
reviewed No Action Needed Split matrix by all-zero columns
Aug
20
reviewed Approve suggested edit on Mismatch between numerical and analytic evaluation of an integral
Aug
20
comment Wavelet expansion of given function (as opposed to DWT of given data)
You show the code Total[Flatten[Last[#] & /@ dwt[Automatic]]^2]/31 and then go on to say "note that /31! Where did that come from?" Is it not there because you typed it in? If not, where did the whole expression come from? I note 1/31 is the table iteration step you used in an earlier line of code.
Aug
20
revised Result of symbolic integration changed drastically by making assumptions
Improved formatting
Aug
19
revised Mapping data on Archimedes' spiral
Improved formatting
Aug
19
reviewed Close Mapping data on Archimedes' spiral
Aug
19
revised Package function not called from button in a DockedCell expression
Improved formatting
Aug
19
comment Package function not called from button in a DockedCell expression
You may have found a bug, but don't use the bugs tag for suspected bugs. It is reserved for marking confirmed bugs.
Aug
19
revised Package function not called from button in a DockedCell expression
edited tags
Aug
19
revised Coordinate extraction and manipulating graphs as graphics objects
edited title
Aug
19
revised Boundaries of graphical objects not displayed correctly
edited tags
Aug
19
comment Possible Bug in ProbitModelFit when used in a Dataset
You are using SemanticImport, which is new to V10. Could the problem lie there? How did you import your data in earlier versions of Mathematica?
Aug
19
comment Boundaries of graphical objects not displayed correctly
No. The bar legends look as you show them.
Aug
19
revised Boundaries of graphical objects not displayed correctly
Major clean-up
Aug
19
comment Boundaries of graphical objects not displayed correctly
I can not reproduce what you report with V10 running on OS X.
Aug
19
revised Can't solve equation having complex coefficients
Major clean-up
Aug
19
revised How can I plot a circular region and lines?
deleted 12 characters in body; edited title