================================== Top new questions this week: ==================================
[\(3D\) graphic of soccer ball] http://mathematica.stackexchange.com/questions/118604/3d-graphic-of-soccer-ball
How to make a soccer ball \(3D\) graphic?
The following image is from Wikipedia, Spherical polyhedron:
Truncated icosahedron (left) and standard soccer ball (right)
...
- asked by vito (23 votes), answered by Michael E2 (23 votes)
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[The character sequence "
. d" triggers line break in strings]
http://mathematica.stackexchange.com/questions/118801/the-character-sequence-d-triggers-line-break-in-strings
Bug introduced in 7.0 or earlier and persists through 10.4.1
Bug isn’t present in version 5.2
Update: Sjoerd pointed out that this happens with any string and it is not related to StringForm. Just ...
- asked by Szabolcs (14 votes), answered by Sjoerd C. de Vries (12 votes)
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[Inconsistent handling of Dynamic option values; intended, omission, or bug?] http://mathematica.stackexchange.com/questions/118646/inconsistent-handling-of-dynamic-option-values-intended-omission-or-bug
In answering Dynamic ClipPlanes calculated from current ViewPoint Kuba and I got into a brief exchange regarding how Option values wrapped in Dynamic should be handled. For background John Fultz ...
- asked by Mr.Wizard (14 votes)
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[How can I plot this spirally surface?] http://mathematica.stackexchange.com/questions/118887/how-can-i-plot-this-spirally-surface
I would like to plot a surface that looks something like this sand spiral.
But I really have no idea how. Ideally I would like to be able to express this as a function in cartesian coordinates. I’m ...
- asked by user41147 (12 votes), answered by Thies Heidecke (28 votes)
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[Any manual on cell grouping management?] http://mathematica.stackexchange.com/questions/118649/any-manual-on-cell-grouping-management
Recently I come back to the problem of cell grouping and performed extensive search on this site and on MathGroup archive for information on how to use the possible values of the CellGroupingRules ...
- asked by Alexey Popkov (12 votes)
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[How can Mathematica be used to create Images like these?] http://mathematica.stackexchange.com/questions/118992/how-can-mathematica-be-used-to-create-images-like-these
Here are two examples of artistic image interpolation using just black lines. The first link shows the desired result created by an artist and the second done with C#.
TRIANGULATION: ANGULAR ...
- asked by R Hall (11 votes), answered by MarcoB (10 votes)
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[How to implement custom NIntegrate integration strategies?] http://mathematica.stackexchange.com/questions/118920/how-to-implement-custom-nintegrate-integration-strategies
How can new integration strategies algorithms be used with NIntegrate?
This is a different type of extension than the extensions with new integration rules, as described in the answer for the ...
- asked by Anton Antonov (10 votes), answered by Anton Antonov (10 votes)
================================== Greatest hits from previous weeks: ==================================
[Fit image of mountain to gaussian] http://mathematica.stackexchange.com/questions/109946/fit-image-of-mountain-to-gaussian
I want to detect the edges of an image of a mountain and then fit that to a gaussian.
I am unsure about how to only get the mountain edge, rather than every single edge in the image.
How do I ...
- asked by olliepower (13 votes), answered by Dr. belisarius (14 votes)
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[How to find the position of elements in a list satisfying criteria] http://mathematica.stackexchange.com/questions/180/how-to-find-the-position-of-elements-in-a-list-satisfying-criteria
Say I have a list x={2,4,6,8,10} and I want to find out the positions of the elements that are greater than 7. Select[x, #>7&] gives the elements themselves, and Position[x,8] gives the ...
- asked by PeterR (32 votes), answered by J. M. (29 votes)
================================== Can you answer these? ==================================
[Softmax Regression Classification Algorithm] http://mathematica.stackexchange.com/questions/118958/softmax-regression-classification-algorithm
I’m following the Stanford Machine Learning course while simultaneously developing my Mathematica abilities. I’m having issues with my Softmax Classifier implementation (for ref, have a look at these ...
- asked by Frederik Brinck Jensen (4 votes)
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[Protected Variable Error with Workbench 3.0] http://mathematica.stackexchange.com/questions/118919/protected-variable-error-with-workbench-3-0
I have Wolfram Workbench 3.0, build 78, with Mathematica 10.4 as the front end. I am using Windows 10. I am trying to run a simple test source code test.m:
fun[x_] := x^2;
I have an empty notebook ...
- asked by S2167 (2 votes)
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[Putting the elements of a list inside another list] http://mathematica.stackexchange.com/questions/118837/putting-the-elements-of-a-list-inside-another-list
I have the list list1 = 1, 3, 4, 5, 6 and want to put the elements of this list inside a list of 0’s, list2 = 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, where each element of list1 will be in the ...
- asked by user41129 (1 vote)