16,783 reputation
41959
bio website none
location Ann Arbor, MI
age 76
visits member for 1 year, 9 months
seen 12 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.


2d
answered What is the natural way of using Dataset to get a FittedModel?
2d
reviewed No Action Needed What is the natural way of using Dataset to get a FittedModel?
Jul
28
revised Intersection of lists of disjoint intervals
Moderate clean-up
Jul
28
answered Controlling the placement of the y-axis
Jul
28
comment Controlling the placement of the y-axis
We really need to know the form of the data you give to`ListPlot` takes. Is it {y1, y2, ..., yn} or is it {{x1, y1}, {x2, y2}, ..., {xn, yn}}?
Jul
28
revised Controlling the placement of the y-axis
Made English more idiomatic.
Jul
28
revised Why can NSolve only solve this system of equations after trivial substitution?
added 79 characters in body
Jul
28
answered Why can NSolve only solve this system of equations after trivial substitution?
Jul
28
revised Why can NSolve only solve this system of equations after trivial substitution?
Improved formatting
Jul
28
comment Interpolation function rejected by ParametricPlot3D
I don't see how we can help you without seeing the code you used to build your interpolating function and the real plot code that failed. Posting code that worked and then giving a vague description about changes you made doesn't cut it.
Jul
28
revised Interpolation function rejected by ParametricPlot3D
Moderate clean-up
Jul
28
comment Interpolation function rejected by ParametricPlot3D
While you use the term Contourplot3D in your title and text, your code uses ParametricPlot3D , which is not the same thing.
Jul
27
reviewed Close Substitution in Mathematica
Jul
27
reviewed Close why head Association cannot be replaced by head List
Jul
27
reviewed Close Solving a system of equations over a custom domain
Jul
27
reviewed Leave Open Backslash commands in strings?
Jul
27
comment Backslash commands in strings?
While this link may answer the question, it is better to include the essential parts of the answer here and provide the link for reference. Link-only answers can become invalid if the linked page changes.
Jul
27
accepted Can't plot rotated region
Jul
27
accepted Can't get Append to append a record (association) to a dataset
Jul
27
revised How do I exclude the vertical line plotted at a discontinuity?
deleted 24 characters in body; edited title