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42571
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location Ann Arbor, MI
age 77
visits member for 2 years, 3 months
seen 2 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.


Jan
24
revised Proving large inequality in 6 variables
edited title; edited body
Jan
23
revised Good sources of programming exercises for learning Mathematica programming?
added 3 characters in body
Jan
23
comment Good sources of programming exercises for learning Mathematica programming?
Follow this link to find out how get David Wagner's book as a free download.
Jan
23
reviewed Reviewed ParametricPlot3D plot n functions
Jan
23
revised ParametricPlot3D plot n functions
added 34 characters in body
Jan
23
revised Showing an output without square brackets
added 184 characters in body
Jan
23
answered Showing an output without square brackets
Jan
22
revised How do I write nested for-loops?
Routine clean-up
Jan
22
comment How to use Mathlink mprep
This question appears to be off-topic because it is not about Mathematica or any of the other Wolfram Research software for which questions are accepted on this site.
Jan
21
revised How can I make an linear breakdown chart similar to those seen on iCloud?
updated with improved algorithm
Jan
21
reviewed Looks OK Finding the pixel positions for the straight line joining two points
Jan
21
comment Finding the pixel positions for the straight line joining two points
Do you want a list of the discrete pixels needed to draw the line segment?
Jan
21
comment Finding the pixel positions for the straight line joining two points
I think the OP wants a list of the discrete pixels needed to draw the line segment. If I'm right, this doesn't quite do the job.
Jan
21
revised Finding the pixel positions for the straight line joining two points
Routine clean-up
Jan
21
reviewed Looks OK Finding the pixel positions for the straight line joining two points
Jan
21
comment How can I make an linear breakdown chart similar to those seen on iCloud?
@M.R. Adding labels to the larger segments is bit tricky or at least fussy. I know of no simple way to get the bounding box of displayed text in Mathematica. That is this the main reason that I did put that feature in my answer.
Jan
21
comment How can I make an linear breakdown chart similar to those seen on iCloud?
@bobthechemist. Whether or not it's easier is a matter of opinion. I did say "or almost so" :) The look of the tooltip including the drop shadow is OS X standard, except for the background color which was changed with a tooltip option.
Jan
20
answered How can I make an linear breakdown chart similar to those seen on iCloud?
Jan
20
revised Dot in place of prime to denote differentiation
Improved formatting; made English more idiomatic
Jan
20
revised Dot in place of prime to denote differentiation
Improved formatting