8.11 October 22, 2013
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Top new questions this week:
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[How to remap a fisheye
image?]\url{http://mathematica.stackexchange.com/questions/34264/how-to-rem
ap-a-fisheye-image}
I want to flatten a series of fisheye images by remapping them to a
rectinlinear projection.
To achieve this, I need to be able to remap the pixels of the image
using fisheye correction formulas for ...
- asked by ErikP (10 votes), answered by Simon Woods (9 votes)
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[Using With to scope over pure
functions]\url{http://mathematica.stackexchange.com/questions/34345/using-w
ith-to-scope-over-pure-functions}
Consider this example: given an option for a function func as "x" :>
(a&), how can one assign different values to a locally inside func?
a = False; (* global value of a *)
func[opt_] := ...
- asked by Istvan Zachar (10 votes), answered by Rojo (12 votes)
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[How do I place a texture on an irregular 3D
model?]\url{http://mathematica.stackexchange.com/questions/34144/how-do-i-p
lace-a-texture-on-an-irregular-3d-model}
I'm trying to reproduce a textured head in Mathematica, and I'm using a
kind of 'net' of a head which contains all the features on the face. The
texture looks like this:
which is supposed to look ...
- asked by user10035 (9 votes), answered by Sjoerd C. de Vries (2 votes)
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[Finding a point from a set of contours such that it is nearest to a
given
point]\url{http://mathematica.stackexchange.com/questions/34204/finding-a-p
oint-from-a-set-of-contours-such-that-it-is-nearest-to-a-given-point}
I have several contour lines and one point. How can I find a point in
one of those contour lines which is nearest to the given point?
(*Create the implicit curves*)
...
- asked by c_susetyo (9 votes), answered by PlatoManiac (11 votes)
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[Organise a graph's vertices into
levels]\url{http://mathematica.stackexchange.com/questions/34106/organise-a
-graphs-vertices-into-levels}
I would like to organise a graph's vertices in levels. Consider
g = {
0 -> 1, 1 -> 2, 2 -> 3, 0 -> 4, 0 -> 5, 2 -> 6, 2
-> 7, 8 -> 3, 4 -> 9, 5 -> 9,
6 -> 9, 6 ...
- asked by (7 votes), answered by ybeltukov (6 votes)
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[Limit of sequence of functions behaving
strange]\url{http://mathematica.stackexchange.com/questions/34124/limit-of-
sequence-of-functions-behaving-strange}
I'm trying to determine the limit of the sequence of functions
$$f_n(x)=\left(\frac{1}{\pi}\arctan(n x) + 1/2\right)^n.
$$
I define
f[x_, n_] := (1/2 + ArcTan[n x]/Pi)^n
And enter
Limit[f[x, ...
- asked by Isak Kupersmidt (7 votes)
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[Extract urls from
list]\url{http://mathematica.stackexchange.com/questions/34484/extract-urls
-from-list}
If I have a list like
list = {"my element 1 http://link.com", "http://link2.com my element 2"}
how do I get a list of the links inside each element?
Something like
StringCases[list, "http" ~~ ...
- asked by su1 (6 votes), answered by Yves Klett (9 votes)
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Greatest hits from previous weeks:
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[Are you interested in purchasing David Wagner's "Power programming with
Mathematica"?]\url{http://mathematica.stackexchange.com/questions/16485/are
-you-interested-in-purchasing-david-wagners-power-programming-with-mathe
mat}
I recently contacted McGraw-Hill to see if they have a mechanism in
place for printing out-of-print books that are still of interest.
Specifically, I asked about "Power programming with Mathematica" ...
- asked by Todd Allen (92 votes), answered by Todd Allen (119 votes)
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[How to create new "person
curve"?]\url{http://mathematica.stackexchange.com/questions/17704/how-to-cr
eate-new-person-curve}
Wolfram|Alpha has a whole collection of parametric curves that create
images of famous people. To see them, enter WolframAlpha["person curve"]
into a Mathematica notebook, or person curve into ...
- asked by Simon (41 votes), answered by Vitaliy Kaurov (14 votes)
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Can you answer these?
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[Exporting graphics to PDF results in destroyed fonts on Windows
8]\url{http://mathematica.stackexchange.com/questions/34303/exporting-graph
ics-to-pdf-results-in-destroyed-fonts-on-windows-8}
Executing
plot = Plot[x^2, {x, 0, 100}, PlotLabel -> "Plot"];
SetDirectory[NotebookDirectory[]];
Export["plot.pdf", plot, "PDF"];
results in
Is this a bug? OS is Windows 8, 64bit.
- asked by Frederik Ziebell (1 vote)
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[TableHeading Lines Do Not Show
Up]\url{http://mathematica.stackexchange.com/questions/34287/tableheading-l
ines-do-not-show-up}
For a list list = {{"a", "b", "c"}, {"d", "e"}}; Table heading lines do
not show up
TableForm[list, TableHeadings -> Automatic]
But it works if the list list = {{"a", "b", "c"}, {"d", "e", ...
- asked by Deco (2 votes)
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[Syntax for
FrontEnd`SelectionSetStyle]\url{http://mathematica.stackexchange.com/questi
ons/34297/syntax-for-frontendselectionsetstyle}
I know FrontEnd`SelectionSetStyle is undocumented, but its name suggests
it does what I need. What is its syntax?
I have already tried several variations of the following button on some
selected code ...
- asked by Hector (2 votes)