7.33 May 20 2014
==================================
Top new questions this week:
==================================
[How can I get the color of overlapping disks to be equal in any
order?]\url{http://mathematica.stackexchange.com/questions/47809/how-can-i-
get-the-color-of-overlapping-disks-to-be-equal-in-any-order}
When Graphics is used, necessarily the objects come in order. This
affects which ones obscure others. When Opacity is not 1, it also
affects the color. I would like the color of overlaps to depend ...
- asked by Russ Lyons (19 votes), answered by Mr.Wizard (9 votes)
----------------------------
[Bug in mathematica analytic
integration?]\url{http://mathematica.stackexchange.com/questions/48113/bug-
in-mathematica-analytic-integration}
I found Mathematica provides me a wrong answer for a relatively simple
analytically solvable integral:
Integrate[Exp[-I\[Theta]]/(1+b Cos[\[Theta]]),{\[Theta],0,2\[Pi]}
Assumptions -> b < 1 && b ...
- asked by user14456 (14 votes), answered by Artes (14 votes)
----------------------------
[how to make a pie chart using custom
image]\url{http://mathematica.stackexchange.com/questions/48078/how-to-make
-a-pie-chart-using-custom-image}
Can we make a pie chart using a costumed picture?
For example, in representing the 0.1 cent, I would like to use this
image and cut a piece out, and make a clickable pie chart. Any
suggestions are ...
- asked by xslittlegrass (13 votes), answered by belisarius (20 votes)
----------------------------
[Undocumented use of Integrate: Integrating over
regions]\url{http://mathematica.stackexchange.com/questions/48166/undocumen
ted-use-of-integrate-integrating-over-regions}
I have come across a few questions asking about integrating over
regions. And while the answers are impressive there should be a better
more consistent way. So my question is, are there ways, ...
- asked by RunnyKine (12 votes), answered by RunnyKine (15 votes)
----------------------------
[Rebuild a polygon so it doesn't self
intersect]\url{http://mathematica.stackexchange.com/questions/48091/rebuild
-a-polygon-so-it-doesnt-self-intersect}
If you consider the following Polygon:
coor = {{6, 0}, {6, 1}, {4, 0}, {5, 2}};
(* and coor = {{7, 2}, {7, 1}, {5, 2}, {6, 1}} *)
pol = Polygon@coor;
Graphics@pol
I would like to know if there is ...
- asked by Oska (10 votes), answered by Rahul Narain (10 votes)
----------------------------
[Exp is slower for some number
ranges]\url{http://mathematica.stackexchange.com/questions/47982/exp-is-slo
wer-for-some-number-ranges}
I get a hit on performance with the Exp function depending on the range
of my inputs. for example, with:
w1 = RandomComplex[-20000 I, {10000000}];
Exp[w1]; // Timing
w2 = RandomComplex[-20 I, ...
- asked by user173743 (10 votes)
----------------------------
[Determine frequency of
oscillations]\url{http://mathematica.stackexchange.com/questions/47917/dete
rmine-frequency-of-oscillations}
I am wondering how I could determine the frequency of oscillations of a
differential model equation? How could I find the frequency from this
example given in Mathematica Documentation:
s = ...
- asked by tarhawk (10 votes), answered by Daniel Lichtblau (15 votes)
==================================
Greatest hits from previous weeks:
==================================
[Generate a Unit Circle
Trigonometry]\url{http://mathematica.stackexchange.com/questions/2456/gener
ate-a-unit-circle-trigonometry}
Struggling often with Trigonometry I would like to have some code to
generate this Unit Circle Trigonometry. Would be of great help when I
need to transform some data :
- asked by 500 (13 votes), answered by Mark McClure (27 votes)
----------------------------
[How do I plot coordinates (latitude and longitude pairs) on a
geographic
map?]\url{http://mathematica.stackexchange.com/questions/2076/how-do-i-plot
-coordinates-latitude-and-longitude-pairs-on-a-geographic-map}
I'm attempting for the first time to create a map within Mathematica. In
particular, I would like to take an output of points and plot them
according to their lat/long values over a geographic map. I ...
- asked by Peter House (37 votes), answered by kguler (24 votes)
==================================
Can you answer these?
==================================
[How can I make sure that 3D plots have the exact same orientation and
viewpoint?]\url{http://mathematica.stackexchange.com/questions/47996/how-ca
n-i-make-sure-that-3d-plots-have-the-exact-same-orientation-and-viewpoin
t}
First off, I apologize that I can't come up with a simpler working
example, but I only seem to have this problem with the larger examples.
I am trying to make animations, using functions like the ...
- asked by Jason B (5 votes)
----------------------------
[Why setting PlotPoints make my 3d contour plot
broken?]\url{http://mathematica.stackexchange.com/questions/47924/why-setti
ng-plotpoints-make-my-3d-contour-plot-broken}
I'm trying to make a iso surface plot from some data using
ContourPlot3d. My data is a 3 dimension data with form like
{{x,y,f[x,y]},...}. I first make this data into 4d by rotating it along
the x ...
- asked by xslittlegrass (2 votes)
----------------------------
[What's the difference between variables with and without a
subscript?]\url{http://mathematica.stackexchange.com/questions/48174/whats-
the-difference-between-variables-with-and-without-a-subscript}
If I input $x = a + b$, the $x$, $a$ and $b$ are blue. When I hit
Shif+Enter, the $x$ turns black, indicating the kernel now knows this
variable. But when I input $x_r = a + b$, and hit Shift+Enter, ...
- asked by user303446 (1 vote)