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visits member for 2 years, 11 months
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(also known as Spartacus)


See those two pins? Well today I'm going to... stick them in you.


Ok, let me come clean: Mr.Wizard is actually an alias of mine... I'm glad I can finally confess. ― Sjoerd C. de Vries

No, I'm Spatac... I mean, Mr.Wizard! ― R.M

I'm Mr.W, and so's my wife! ― acl


@Spartacus, it was not fixable. ― rcollyer

check again; I just fixed it. :-p ― Spartacus


"This is the internet, where the men are men, the women are men and the children are FBI agents..." ― yoda Dec 18 '11 at 6:06


"My main purpose of being here is in collecting the votes. I'd even go further and say that this is my main purpose in life." ― Leonid Shifrin


"I am making some voodoo dance and invoking the rain God while we talk" ― belisarius


Some people are fortunate. Others get married. ― belisarius


It's not that easy to do the untangling even manually though. – Szabolcs

Maybe you could turn it into a puzzle and let other people do the untangling :-) – Heike

I could make a web based game, and feed all my graphs to the visitors.
SE is a big game, isn't it? :D – Szabolcs


"ListContourPlot crush on simple 5-points data" (Question title)

"Yes, this must be love at first sight."ruebenko


... but I am working with a large body of code written by an incompetent fool (i.e. myself, several years ago...) – Simon Woods


I was tempted to edit your title: "Do rules rule?" But my nose is still bleeding as a result of a limerick. – belisarius


No, but they nowadays let me turn off the lights at night; 24 hours of fluorescence was really starting to make me feral. Brett says I should also mention the tip jar... – Daniel Lichtblau Mar 13 '12 at 20:48


Project Euler


Dec
24
revised Deleting powers of a common prime except the highest one from a list with further only primes
added 277 characters in body
Dec
24
answered Deleting powers of a common prime except the highest one from a list with further only primes
Dec
23
comment How to transform the polynomial in this way?
I already did. ;^)
Dec
23
comment How to transform the polynomial in this way?
+1 for using SetDelayed :D
Dec
23
revised Which ColorFunction should I use to get such a gradient of blue-cyan-green-yellow-orange-red?
added 72 characters in body
Dec
23
comment Global precision setting
highsciguy, I note that you did not Accept my answer. If you find it lacking please tell me how it fails and I shall try to fix it.
Dec
23
comment Which ColorFunction should I use to get such a gradient of blue-cyan-green-yellow-orange-red?
Yeah, it's the shape of the surface. This looks right: Plot3D[x + y, {x, 0, 1}, {y, 0, 1}, ColorFunction -> (jet[#3] &)] (+1 of course)
Dec
23
comment Which ColorFunction should I use to get such a gradient of blue-cyan-green-yellow-orange-red?
Is it just me or does this actually not match the original images very well? Maybe it's the shape of the surface. *shrug*
Dec
23
revised Which ColorFunction should I use to get such a gradient of blue-cyan-green-yellow-orange-red?
added 122 characters in body
Dec
23
reviewed Reject How to export data files using specific format
Dec
23
comment Which ColorFunction should I use to get such a gradient of blue-cyan-green-yellow-orange-red?
@Kardashev3 It doesn't look like his example images because it is darker and more muted. See my answer for my best guess as to what Scott wants.
Dec
23
answered Which ColorFunction should I use to get such a gradient of blue-cyan-green-yellow-orange-red?
Dec
23
comment Why is my plot so small?
I meant that you are not plotting anything in the body of LogLinearPlot; you are only using it ancillary fashion get logarithmic scaling. Possibly using e.g. LogLinearPlot[10, {r, 10, 100}, PlotStyle -> Transparent, . . . will help. Since I don't have the problem I can't test it, and since Kardashev3 also does not have the problem this might have to do with your local configuration.
Dec
23
revised Code performance problem
edited tags
Dec
23
comment Code performance problem
@Yves Thank you for fixing the code. I hope the OP appreciates your effort.
Dec
23
revised Code performance problem
deleted 112 characters in body
Dec
23
comment Why is my plot so small?
In version 7 I get no errors and a plot of normal dimension. What version are you using? Presumably your empty-body usage wasn't designed for. Try plotting something but styling it white or transparent.
Dec
23
revised Why does PolynomialQ[x^n, x] return False?
edited tags; edited title
Dec
23
comment professionalize/optimize my code that calls a function
@shrx AppendTo has the same performance; AppendTo[x, n] is merely a shorthand for x = Append[x, n]. Speed is not really an issue with short lists, but since I believe in writing code that scales well I still repetitive Append operations. Compare: small = Range[10]; Timing @ Do[AppendTo[small, n], {n, 1000}] to big = Range[1*^7]; Timing @ Do[AppendTo[big, n], {n, 1000}] -- huge difference. (More than 4000 times slower on my system.)
Dec
22
comment Mathematica Application in Real Life
@Leonid You laid out a wonderful summary of the topic and I appreciate that. Have you now observed methods that are different from or extend beyond the concepts presented there?