16,661 reputation
13580
bio website sites.google.com/a/unca.edu/…
location Asheville, NC
age
visits member for 2 years, 3 months
seen 7 mins ago

I've been a professor of mathematics at The University of North Carolina - Asheville since 1997. I've been using Mathematica since I started graduate school in mathematics at Ohio State in 1989. At that time, we used version 1.1 (as I recall) to teach calculus in our Calculus and Mathematica classes. I've used it pretty much continuously in my teaching and research since then.

In addition to my posts on SE, you can find some of my papers, teaching notebooks and other Mathematica based oddities strewn throughout my website.

In recent years, I've also worked as a part-time consultant to Wolfram Research focusing on development of mathematical content for WolframAlpha.


3h
comment How to combine more locations (GPS coordinates inside one city) with Google map?
Though this question has been closed as a duplicate, it duplicates no question that I can find on this site. It is certainly not a duplicate of "How do I plot coordinates, latitude and longitude pairs, on a geographic map?", which asks about plotting points on a map in the notebook. This question, in contrast, asks how to export Mathematica generated information to a Google Map.
17h
comment How to combine more locations (GPS coordinates inside one city) with Google map?
@Vica Yes, I am aware of the nature of your data because the code in my answer below works perfectly for your GPSList.
21h
comment How to combine more locations (GPS coordinates inside one city) with Google map?
@J.W.Perry Thanks - I'm glad you like it!
1d
comment How to combine more locations (GPS coordinates inside one city) with Google map?
I think the question needs to be formulated a bit more clearly and in more detail before a solid answer can be given. It sounds like you want to create (typo?) a GoogleMap using Mathematica? If so, this question is certainly not a duplicate nor does it represent functionality present in V10. Do you have an example? Perhaps, a pointer to the type of map you would like to create?
2d
comment Surface area of intersecting spheres
@george2079 I agree. He said he wanted fast, though, so fast I went. :) Feel free to edit.
Apr
19
comment Surface area of intersecting spheres
@george2079 Judging from the output of Graphics3D[Sphere@@@coords[50]], the spheres may intersect.
Apr
16
comment solving simple integral equation
Are you looking for math.stackexchange.com?
Mar
20
comment How to compile gather
I don't believe that Gather is compilable. You can see a list of compilable functions in the answers to this question.
Mar
10
comment Finding differences between Pi with varying number of decimals
@xzczd Your a is effectively zero and there's no version of zero with positive, finite precision so SetPrecision returns the closest thing it could. Arguably, though, 0.0 would have been more natural.
Mar
7
comment Why does Simplify[b-a] give -a+b and not b-a?
Hmm... I don't think that HornerForm is really a wrapper in the same sense that InputForm, StandardForm, and TraditionalForm are wrappers. In fact, HornerForm[Simplify[b - a]] returns the same thing as just Simplify[b - a].
Mar
7
comment Why does Simplify[b-a] give -a+b and not b-a?
If you'd like to see $b-a$, you might look into TraditionalForm.
Mar
7
comment Determine types of input, output and internal variables in compiled functions
Of course, the intermediate variable res should be localized in a Module anyway. By incorporating res=0*I, you're essentially declaring res to be Complex. Is that correct? If so, I would have expected 0.0*I to make more sense. I guess that Module has the attribute HoldAll so that it sees the I anyway.
Mar
7
comment How to apply a conformal map to a jpg (or other image)
You might be interested in this: facstaff.unca.edu/mcmcclur/blog/QuadraticCamera.html
Mar
6
comment How to visualize slope fields of differential equations without vectors?
Well, "slightly off" would be a better description than "poor". :)
Mar
5
comment How to visualize slope fields of differential equations without vectors?
+1 for the VectorStyle->"Segment", which I didn't know. Not actually a slope field, however.
Mar
4
comment Generating high quality charts in Mathematica for use in LaTeX and Word
Looks like a question for the main site, to me - although possibly a duplicate. At any rate, PNG is definitely a raster format - not vector, so that's likely an issue. For nice figures with labels in LaTeX, I usually export to EPS and use the psfrag package in LaTeX to get native fonts in the figures.
Mar
4
comment Plot Matlab icon
Agreed on the boundary constraints. For what it's worth, my image (done quite some time ago) was based on an earlier icon which (as I recall) was constrained at the edges.
Mar
4
comment How to plot data of complex numers
ListLinePlot[{Re[#], Im[#]} & /@ Flatten[K0 /. out]]
Mar
3
comment 2d heat conduction equation: Boundary and initial conditions are inconsistent
@george2079 The new reference site is set up to hold lots of new information of finite element methods. Most of these pages don't yet exist, but presumably will in the near future: reference.wolfram.com/search/?q=fem
Mar
3
comment 2d heat conduction equation: Boundary and initial conditions are inconsistent
It's possible that the techniques outlined in the answer to this question might help.