7.5 Tuesday, December 2, 2014

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Top new questions this week: 
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[Wind Map Artwork] http://mathematica.stackexchange.com/questions/66936/wind-map-artwork

I would like some help generating an image like the one seen below.

The image above is an art piece called Wind Map by artists Fernanda Viegas and Martin Wattenberg.

I would like to take wind ...

- asked by James Rohal (15 votes), answered by Silvia (10 votes)

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[Visual representation of a Ranking over time (image provided)] http://mathematica.stackexchange.com/questions/66581/visual-representation-of-a-ranking-over-time-image-provided

[Disclaimer: I initially posted this question on stackOverflow 2 months ago and think it might be better suited for this forum (link to original question)]

The graph below shows a ranking of ...

- asked by Seb (15 votes), answered by belisarius (17 votes)

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[Drawing a square root spiral] http://mathematica.stackexchange.com/questions/66969/drawing-a-square-root-spiral

Here is a start, i’m looking for a nice way.

Graphics[{EdgeForm[Black], White, 
Polygon@{{0, 0}, {-1, 0}, 
Sqrt[2] {Cos[#], Sin[#]} &[Pi - (ArcCot[1])]}, 
Polygon@{{0, 0}, Sqrt[2]  ...

- asked by mathe (12 votes), answered by Bob Hanlon (7 votes)

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[Mathematica, animations, and external ray tracing programs] http://mathematica.stackexchange.com/questions/66638/mathematica-animations-and-external-ray-tracing-programs

As much as I enjoy and admire Mathematica’s animation capabilities, I would like to take my animations to the next level by exporting the geometry of every frame to an external ray tracing program ...

- asked by Kim Fierens (11 votes), answered by Alexey Popkov (4 votes)

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[Combine Stereographic "Entity" Plot of Arctic Sea with Contour Plot] http://mathematica.stackexchange.com/questions/66562/combine-stereographic-entity-plot-of-arctic-sea-with-contour-plot

In the announcement of Mathematica 10 there were some very cool features for every geo-related researcher. Like this one

what i’m trying to do is to overlay an ContourPlot onto this beautiful arctic ...

- asked by Julian Carpenter (10 votes), answered by FJRA (3 votes)

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[Generating Random Real numbers with certain numbers not included] http://mathematica.stackexchange.com/questions/66756/generating-random-real-numbers-with-certain-numbers-not-included

I’m writing a program that i need 1000 real number between -3 and 6. the code that I used for generating and saving them was

l = RandomReal[-3, 6, 1000]

But I want to be sure none of these ...

- asked by user2838619 (9 votes), answered by belisarius (9 votes)

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[Detect implicit grid in image with monospaced characters] http://mathematica.stackexchange.com/questions/66886/detect-implicit-grid-in-image-with-monospaced-characters

I’m trying to detect the monospaced-grid in a possibly slightly deformed image of a receipt. Example input (full size here)

My idea is to obtain the centroids or bounding boxes of all components ...

- asked by Thijs (8 votes), answered by belisarius (9 votes)

================================== Greatest hits from previous weeks: ==================================

[Assign the results from a Solve to variable(s)] http://mathematica.stackexchange.com/questions/6669/assign-the-results-from-a-solve-to-variables

I understand Mathematica can’t assign the results of a Solve to the unknowns because there may be more than 1 solution. How can I assign the 4 values of following result to variables?

- asked by stevenvh (16 votes), answered by Artes (10 votes)

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[Generating visually pleasing circle packs] http://mathematica.stackexchange.com/questions/40334/generating-visually-pleasing-circle-packs

EDIT: (my conclusion and thank you note) I want to thank you all guys for this unexpected intellectual and artistic journey. Hope you had fun and enjoyed it the same as I did.

I would like to ...

- asked by VividD (67 votes), answered by level1807 (42 votes)

================================== Can you answer these? ==================================

[Lists for built-in functions that can work without brackets] http://mathematica.stackexchange.com/questions/67039/lists-for-built-in-functions-that-can-work-without-brackets

I just noticed that Exit and Quit can work without brackets i.e. a single

Exit

or

Quit

will quit the kernel. Quite surprising!

This isn’t mentioned in the document of them. Is there a list for ...

- asked by xzczd (3 votes)

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[ImportString JSON possible bug] http://mathematica.stackexchange.com/questions/67076/importstring-json-possible-bug

My problem is when I catch up some json output of  whatever method and 
process it with ImportString[%, "JSON"], The first time when it 
executes, it works and then without doing anything, it stops  ...

- asked by d555 (4 votes)

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[Fractals or other patterns in the quadruple linked pendulum] http://mathematica.stackexchange.com/questions/67012/fractals-or-other-patterns-in-the-quadruple-linked-pendulum

This will seem like a physics question, but I’m looking for something to do in Mathematica specifically. I’ve successfully modeled a quadruple linked pendulum by setting up the ODEs and solving them ...

- asked by Lonely Mathematician (3 votes)