================================== Top new questions this week: ==================================
[The paradigm behind Dynamic and related functionality] http://mathematica.stackexchange.com/questions/126471/the-paradigm-behind-dynamic-and-related-functionality
Dynamic and the related functionality strikes me as a very unique way to build quick and dirty personal GUIs which are great for experimentation.
I suspect that this is only because of my lack of ...
- asked by Szabolcs (24 votes), answered by Leonid Shifrin (21 votes)
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[Bug with iterated With: Referring to function arguments invalidates previous definitions] http://mathematica.stackexchange.com/questions/126425/bug-with-iterated-with-referring-to-function-arguments-invalidates-previous-def
G[x_] := With[{a = 0}, With[{b = x}, a]] G @ 0 F[x_] := With[{a = 0}, {b = x}, a] F @ 0 gives 0 a
I would expect both to behave exactly the same.
It seems that referring to the parameter ...
- asked by masterxilo (20 votes), answered by Kuba (20 votes)
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[How to quickly find all grid cells covered by a geometric region?] http://mathematica.stackexchange.com/questions/126346/how-to-quickly-find-all-grid-cells-covered-by-a-geometric-region
I’m trying to compute a complete set of unit grid cells ("pixels") which a geometric region covers at least partially. I have constructed a method that produces correct results:
With[{reg = ...
- asked by kirma (14 votes), answered by george2079 (9 votes)
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[Cone Trees: map a graph onto geometric shape] http://mathematica.stackexchange.com/questions/126657/cone-trees-map-a-graph-onto-geometric-shape
Question
Is it possible to map a Graph onto a geometric object such as a Cone?
Motivation
Visualizing large trees can be tedious, especially when limited to the confines of the printed page. One ...
- asked by SumNeuron (13 votes), answered by Szabolcs (18 votes)
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[Evaluate expressions within Vim] http://mathematica.stackexchange.com/questions/126449/evaluate-expressions-within-vim
I want to be able to type a quick Mathematica expression, such as
550/3. (e.g. common math), Sum[i, {i, 0, n}]//TeXForm//ToString (e.g. writing LaTeX document), or {55, 1, 10, 40, 9}//Total (e.g. ...
- asked by Andrew MacFie (11 votes), answered by Andrew MacFie (11 votes)
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[Non newtonian calculus] http://mathematica.stackexchange.com/questions/126730/non-newtonian-calculus
I would like to define a new operator say
\(\text {stard}[f[x]] = \lim _{h\rightarrow 0}\left (\frac {f[x+h]}{f[x]}\right )^{\frac {1}{h}}\)
I think it must be done with an upvalue but I do not know how to ...
- asked by cyrille.piatecki (10 votes), answered by Szabolcs (18 votes)
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[How could I perform Region or Polygon Clipping in mathematica?] http://mathematica.stackexchange.com/questions/126463/how-could-i-perform-region-or-polygon-clipping-in-mathematica
I need to clip several regions reg: like Rectangle, Polygon, Ellipse... My goal isn’t to plot the clipping but to have a representation of each new region.
I searched if there was any package or ...
- asked by A.M. (10 votes), answered by george2079 (4 votes)
================================== Greatest hits from previous weeks: ==================================
[Beautiful dance of the Earth and Venus around the sun] http://mathematica.stackexchange.com/questions/115358/beautiful-dance-of-the-earth-and-venus-around-the-sun
I have seen very nice dynamic graphics created by users of Ma. I would like to get help whether the following graphics can be created using Ma. I was not able to create the dynamic picture here. ...
- asked by ramesh (12 votes), answered by ubpdqn (6 votes)
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[How can this image (optical illusion) be created with Mathematica?] http://mathematica.stackexchange.com/questions/24148/how-can-this-image-optical-illusion-be-created-with-mathematica
I came across this image the other day:
and liked the sensation of it pulsing. I was wondering if anyone would know how to create something similar with Mathematica (without the Pink Floyd Dark ...
- asked by Mike Honeychurch (53 votes), answered by halirutan (66 votes)
================================== Can you answer these? ==================================
[Smart Subscript] http://mathematica.stackexchange.com/questions/126736/smart-subscript
I have a question about subscript policy. For some reason I have some variables called Subscript[q, 1], Subscript[q, 2], Subscript[q, 3] and Subscript[q, 4]. I know that I could have called them in ...
- asked by MaPo (1 vote)
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[Difficult R installation] http://mathematica.stackexchange.com/questions/126501/difficult-r-installation
In RLink and R v3.0.1?, there is an update which say that the problem of the lack of compatibility between the expected version and the last version of R has been settled for version 10.0.1 of ...
- asked by cyrille.piatecki (2 votes)
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[Does Overflow[] poison session for N?] http://mathematica.stackexchange.com/questions/126337/does-overflow-poison-session-for-n
Summary: once Mathematica hits an overflow error, N[] appears to break for even simple calculations.
RealDigits[N[Sqrt[2]-1,10^8]];
I was impressed that Mathematica ran the code above (first 100 ...
- asked by barrycarter (9 votes)