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.


8h
revised Trying to get plots to work AGAIN
Improved formatting
8h
revised Hilbert transform of density of states
Improved formatting
21h
revised Phase portrait on a cylinder
deleted 8 characters in body
21h
revised Usage of @ symbol in Mathematica
deleted 9 characters in body
21h
revised RegionPlot with PlotRange vs RegionPlot with domain
replied to issues raised in comment
2d
revised How do I extract the coordinates of a GeoGraphics polygon?
Minor clean-up
2d
revised Importing data from files designated in an InputString dialog box
edited body
2d
revised Importing data from files designated in an InputString dialog box
Made code more robust by adding recovery from import failure
2d
revised Importing data from files designated in an InputString dialog box
edited body
2d
revised Importing data from files designated in an InputString dialog box
edited title
2d
revised NDSolve with a constant
I know the symbolic integral from mathematica notebook doesn't appear well here that's why it is preferable to use Integrate function.
Oct
27
revised Hatched filling for ListLinePlot
Improved formatting
Oct
26
revised Control size of formula in a gridbox
edited title
Oct
26
revised Fractions formatting in Column / Grid
Made English more idiomatic
Oct
26
revised How to build a constant Graphics object
added 8 characters in body
Oct
26
revised Solving/simplifying a trig expression
Major clean-up
Oct
26
revised Solving/simplifying a trig function
Routine clean-up
Oct
26
revised Automatically discover the class of an arbitrary matrix
Routine clean-up
Oct
24
revised Selecting every n-th element from a list
Routine clean-up
Oct
24
revised MapThread problem
Added brief preface to code example