7.30 June 10, 2014
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Top new questions this week:
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[Making a Mathematica package
manager?]\url{http://mathematica.stackexchange.com/questions/49111/making-a
-mathematica-package-manager}
I'd like to get a serious discussion started about a package manager.
This has come up elsewhere, and many people have implemented their own
solutions. It would be nice to have a standardized way to ...
- asked by mfvonh (10 votes), answered by mfvonh (7 votes)
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[Graph from binary matrix (not adjacency) respecting the original matrix
positions]\url{http://mathematica.stackexchange.com/questions/50363/graph-f
rom-binary-matrix-not-adjacency-respecting-the-original-matrix-position>
)
I have a binary matrix. My objective is to connect every close (without
"jump") elements with value equal to 1, but I must keep the point
positions, just like it's shown at the image.
Can somebody ...
- asked by Jazz (9 votes), answered by Oska (11 votes)
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[Using Mathematica to make a graphics array of
circles]\url{http://mathematica.stackexchange.com/questions/49176/using-mat
hematica-to-make-a-graphics-array-of-circles}
I need to make .svg file that contains an array of black circles that
all have radii of 5 units ad are evenly spaced apart from each other 32
units.
The difficulty in creating this design is the ...
- asked by Sebastian Freeman (9 votes), answered by halirutan (3 votes)
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[CSS Selectors for Symbolic
XML]\url{http://mathematica.stackexchange.com/questions/49052/css-selectors
-for-symbolic-xml}
Symbolic XML is a convenient way of managing XML in Mathematica, at
least for casual use or small tasks. Here and elsewhere you can find
examples of XML handling in Mathematica, including XSLT/XPath ...
- asked by Fallible (8 votes), answered by Fallible (12 votes)
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[Complement of
multisets]\url{http://mathematica.stackexchange.com/questions/49068/complem
ent-of-multisets}
Given lists $a$ and $b$, which represent multisets, how can I compute
the complement $a\setminus b$?
I'd like to construct a function xunion that returns the symmetric
difference of multisets.
For ...
- asked by Leon Lampret (8 votes), answered by rasher (8 votes)
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[Thread over uneven (ragged) expressions with full
functionality?]\url{http://mathematica.stackexchange.com/questions/49359/th
read-over-uneven-ragged-expressions-with-full-functionality}
There are a number of questions on this site about "threading" including
several relating to uneven (ragged) lists. However, none that I could
find deal with the full functionality of Thread but ...
- asked by Mr.Wizard (7 votes), answered by mfvonh (5 votes)
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[Hatched Filling for
ListPlot]\url{http://mathematica.stackexchange.com/questions/49202/hatched-
filling-for-listplot}
I am plotting to data curves using ListLinePlot. I like the look of
Filling, but this is going to be printed, so I want something both black
and white friendly, but giving more definition and ...
- asked by ThomasH (7 votes), answered by ThomasH (4 votes)
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Greatest hits from previous weeks:
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[Finding real roots of negative numbers (for example,
$\sqrt[3]{-8}$)]\url{http://mathematica.stackexchange.com/questions/3886/fi
nding-real-roots-of-negative-numbers-for-example-sqrt3-8}
Say I want to quickly calculate $\sqrt[3]{-8}$, to which the most
obvious solution is $-2$.
When I input $\sqrt[3]{-8}$ or Power[-8, 3^-1], Mathematica gives the
result "$2 (-1)^{1/3}$". Not what I ...
- asked by jtbandes (31 votes), answered by Brett Champion (10 votes)
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[Is it possible to export the equations from Mathematica to
MATLAB?]\url{http://mathematica.stackexchange.com/questions/14035/is-it-pos
sible-to-export-the-equations-from-mathematica-to-matlab}
Is it possible to export the output expressions from Mathematica
computations (e.g., equations) in valid MATLAB syntax?
- asked by Seyhmus Gungoren (14 votes), answered by rm -rf (20 votes)
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Can you answer these?
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[Relative performance of the Julia
language]\url{http://mathematica.stackexchange.com/questions/50391/relative
-performance-of-the-julia-language}
I was just reviewing the Mathematica benchmark code linked from the
Julia language home page http://julialang.org/. The stated goal of the
benchmarks is to test the performance of specific algorithms, ...
- asked by TheDoctor (2 votes)
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[Help wanted in evaluating an
integral]\url{http://mathematica.stackexchange.com/questions/49319/help-wan
ted-in-evaluating-an-integral}
Trying to evaluate an integral. To be specific, I'm trying to find the
expectation value of $x^2$ for the ground state of hydrogen. Here is the
code I used:
FullSimplify[
Integrate[x^2/(Pi*a^3) ...
- asked by Sam (1 vote)
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[Tooltip over a picture & creating complex
forms]\url{http://mathematica.stackexchange.com/questions/49235/tooltip-ove
r-a-picture-creating-complex-forms}
I have some picture like the one seen below. Now, I'm trying to create
some tooltip with some descriptions when moving with the mouse over a
body part e.g. "this is the head", "This is the left arm" ...
- asked by holistic (1 vote)