Mathematica Weekly Newsletter
Mathematica Weekly Newsletter

Top new questions this week:

Bug in ArcLength?

With Mathematica 10.0.2: ArcLength[Line[{{0, 0}, {1, 0}, {2, 0}}]] ArcLength[Line[{{0}, {1}, {2}}]] (* 2 *) (* 2 *) However, ArcLength[Line[{{0, 0}, {1, 0}, {2.0, 0}}]] ArcLength[Line[{{0}, {1}, ...

calculus-and-analysis bugs computational-geometry geometry  
asked by qwerty 20 votes
answered by Itai Seggev 7 votes

Save as pdf broken in version 10.0.2?

It looks like the save as pdf is broken after I update to version 10.0.2. The labels in the plot become a mess. Are there ways to fix it? The Export function works well though. Here is a screenshot ...

plotting bugs version-10 pdf-format  
asked by xslittlegrass 13 votes

10.0.2 mapping Association to Dataset warning

In 10.0.2 ExampleData[{"Dataset", "Titanic"}][All, <| "gender" -> #sex|> &] Outputs the expected result, but also throws: MapAt::partw: Part {1,All,2} of ...

bugs dataset associations  
asked by alancalvitti 11 votes
answered by Taliesin Beynon 12 votes

What does f_[whoCalled]^:=f really mean?

I came across the following post by John Doty in this Google Groups discussion: On Friday, January 11, 2013 8:23:16 PM UTC-7, amzoti wrote: It is clear the Mathematica uses Lisp as one ...

symbolic term-rewriting  
asked by Shredderroy 11 votes
answered by Chris Degnen 1 vote

representation of custom deformation on a meshgrid

I am trying to represent 2D deformations on a rectangular grid. In Mathematica 10, there is a method to solve the elastic differential equations and then represent the deformation as presented here: ...

differential-equations visualization mesh fem grid-lines  
asked by Botond 9 votes
answered by Michael E2 12 votes

Processing a circular rainbow in an image

I was flying cross country last week. We were at about 35000 feet with a complete cloud deck below us. I looked down and saw a complete circular rainbow above the clouds. It was in view about 10 ...

image-processing  
asked by Rob 9 votes
answered by Mr.Wizard 9 votes

Sampling phase space uniformly for a given energy

For example, for the 1D harmonic oscillator, the energy is given by: $$ E = \frac{1}{2 m} p^2 + \frac{m \omega^2}{2} x^2 $$ where x is position and p is the momentum. I would like to sample phase ...

random distributions  
asked by user29165 8 votes
answered by bbgodfrey 5 votes

Greatest hits from previous weeks:

How to create a new "person curve"?

Wolfram|Alpha has a whole collection┬╣ of parametric curves that create images of famous people. To see them, enter WolframAlpha["person curve"] into a Mathematica notebook, or person curve into ...

graphics image-processing algorithm wolfram-alpha-queries generative-art  
asked by Simon 48 votes
answered by Vitaliy Kaurov 21 votes

How to find the domain and range of a function with Mathematica?

I'm studying calculus and in some exercises I am asked to find the domain and range of a function. Does Mathematica have already a built-in function for this? I can imagine some ways of doing so, ...

functions calculus-and-analysis  
asked by Vÿska 17 votes
answered by Szabolcs 18 votes

Can you answer these?

Linux: Mathematica crashes when clicking documentation links very fast

Can someone confirm the following behavior: Open a new Mathematica and go to the documentation. Navigate to any reference page (I used RegionPlot) and click repeatedly and very fast the RegionPlot ...

front-end bugs crash  
asked by halirutan 5 votes

My code does not give the same results on mathematica 9 and 10

I have developed last year an algorithm using mathematica 9. In this algorithm, I remember that coordinate system of Image and Graphics are not the same. However, in mathematica 10 the coordinate ...

graphics image coordinate-transformation  
asked by Developer2000 4 votes

Can mathematica be configured to auto pair different parenthese?

In DrRacket, the editor can auto pair different parentheses, for example code like (let [(x 3 and whether press ) or ] key will input the correct type of parentheses )', and the next)will produce]`. ...

autocomplete editing  
asked by m00nlight 1 vote
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