7.31 June 3, 2014
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Top new questions this week:
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[Is this the most effective and efficient programming style for
prototyping (a ray tracer) in
Mathematica?]\url{http://mathematica.stackexchange.com/questions/48675/is-t
his-the-most-effective-and-efficient-programming-style-for-prototyping-a
-ra}
I am trying out Mathematica as a prototyping tool. As an initial
exercise I have put together a brute force ray tracer, with a view to
using Mathematica's built in probability distribution functions ...
- asked by jrp (22 votes)
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[Negative
probability?]\url{http://mathematica.stackexchange.com/questions/48814/nega
tive-probability}
I am trying to get the sum of the squares of seven random variables, all
uniformly distributed. This is what I tried.
Probability[
a^2 + b^2 + c^2 + d^2 + e^2 + f^2 + g^2 < 1,
{a, b, c, d, e, ...
- asked by bobbym (18 votes), answered by m_goldberg (12 votes)
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[Aligning two
lists]\url{http://mathematica.stackexchange.com/questions/48908/aligning-tw
o-lists}
I have two lists, L1 and L2, each with a key and some data. Let us say
the key is a person's name, a string, and the data follows. (To respond
to rasher's query:) Let us also assume the lists are ...
- asked by Joseph O'Rourke (8 votes), answered by Mr.Wizard (4 votes)
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[Any way I can solve this
integral?]\url{http://mathematica.stackexchange.com/questions/48766/any-way
-i-can-solve-this-integral}
So, Mathematica can't solve it. Any workaround?
\begin{equation*}
\int_0^\pi \frac{1}{\sin\left(\frac{\theta}{2}\right)^\beta + 1}
\mathrm{d}\theta
\end{equation*}
The code is:
...
- asked by user1883163 (7 votes), answered by Vitaliy Kaurov (10 votes)
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[Speed up
ContourPlot3D]\url{http://mathematica.stackexchange.com/questions/48773/spe
ed-up-contourplot3d}
I have two issues with the following code. (1) It executes too slowly.
If I use "Speed" instead of "Quality" for PerformanceGoal, I get the
speed but an undesirable delay in proper rendering of the ...
- asked by Stephen (7 votes), answered by Kuba (4 votes)
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[Binarize turning image completely
black?]\url{http://mathematica.stackexchange.com/questions/48683/binarize-t
urning-image-completely-black}
Running Binarize (or EdgeDetect) on a filled black and white image is
resulting in an all black image.
The image has the following color distribution (with most images points
falling in either a ...
- asked by Peeter Joot (7 votes), answered by Jens (14 votes)
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[Why does Equal["string", False] not evaluate to
False?]\url{http://mathematica.stackexchange.com/questions/48851/why-does-e
qualstring-false-not-evaluate-to-false}
Why does Equal["string", False] not evaluate to False? I would have
thought Mathematica could prove that these two things are not equal.
- asked by Fructose (6 votes), answered by eldo (5 votes)
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Greatest hits from previous weeks:
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[What Mathematica book to
buy?]\url{http://mathematica.stackexchange.com/questions/5059/what-mathemat
ica-book-to-buy}
I have used Mathematica for several years but at a pretty low level -
piecing together built-in function inefficiently and fearing the sight
of # and &'s when I see others use them (I never do). I ...
- asked by BeauGeste (28 votes), answered by David (42 votes)
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[How to find all the local minima/maxima in a
range]\url{http://mathematica.stackexchange.com/questions/5575/how-to-find-
all-the-local-minima-maxima-in-a-range}
I want to find :
all local maxima in range
all local minima in range
>From those points I can interpolate and combine functions upper and
lower boundary. What I am really interested in, is the ...
- asked by Margus (35 votes), answered by Daniel Lichtblau (37 votes)
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Can you answer these?
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[Suspend computation so it can be resumed even after the PC is
rebooted]\url{http://mathematica.stackexchange.com/questions/48793/suspend-
computation-so-it-can-be-resumed-even-after-the-pc-is-rebooted}
Sometimes a computation takes a long time. But when I sleep in the
night, I want to shutdown my PC. Next morning when I wake, I want to
start Mathematica and resume the computation.
If you are ...
- asked by user565739 (3 votes)
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[Simulating a system of nonlinear
ODEs?]\url{http://mathematica.stackexchange.com/questions/49004/simulating-
a-system-of-nonlinear-odes}
I was trying to simulate a system of ODEs on Mathematica in an effort to
try to understand how to muck around with Mathematica but for some
reason the following lines of code do not yield any results; ...
- asked by Gadha007 (2 votes)
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[Documentation build failed with
Workbench]\url{http://mathematica.stackexchange.com/questions/48958/documen
tation-build-failed-with-workbench}
I'm starting to use Wolfram Workbench 2 to develop a Mathematica
package. For the first time I tried "Documentation - Build" under the
"Application Tools" but got fatal errors:
BUILD FAILED
...
- asked by Chris K (2 votes)
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