1.1.1 Top new questions this week

1.1.1.1 Object separation from a 2.5D surface
1.1.1.2 Site - Cell Correspondence in Voronoi Diagram obtained via VoronoiMesh
1.1.1.3 How to create a neon light effect in Mathematica?
1.1.1.4 Find maximum value of interpolation function - obviously wrong result
1.1.1.5 Set of integers not divisible by smaller set of primes
1.1.1.6 Neumann boundary conditions in NDSolve over nontrivial region
1.1.1.7 Is garbage collection broken in version 10.0.0?
1.1.1.1 Object separation from a 2.5D surface

http://mathematica.stackexchange.com/questions/58269/object-separation-from-a-2-5d-surface

 
I'm trying to identify the shape and the boundaries of objects. The data 
was generated with a laser scanner and represent the surface of an area 
in which many boulders lay on the ground and making up  ...
 

- asked by zeckra (18 votes), answered by shrx (3 votes)

1.1.1.2 Site - Cell Correspondence in Voronoi Diagram obtained via VoronoiMesh

http://mathematica.stackexchange.com/questions/58395/site-cell-correspondence-in-voronoi-diagram-obtained-via-voronoimesh

 
Consider the following: 
 
pts = RandomReal[4, {10, 2}]; 
vor = VoronoiMesh[pts, {{0, 4}, {0, 4}}]; 
 
Graphics[{GraphicsComplex[ 
MeshCoordinates[vor], {Thick, Blue, MeshCells[vor, 1], 
...
 

- asked by RunnyKine (12 votes), answered by ybeltukov (7 votes)

1.1.1.3 How to create a neon light effect in Mathematica?

http://mathematica.stackexchange.com/questions/58602/how-to-create-a-neon-light-effect-in-mathematica

 
I tried to use Glow to create a neon light effect on a torus object. The 
result shown on the left of the picture below looks quite different from 
the real one on the right. Is there a way to obtain a  ...
 

- asked by Putterboy (12 votes), answered by DaveStrider (26 votes)

1.1.1.4 Find maximum value of interpolation function - obviously wrong result

http://mathematica.stackexchange.com/questions/58244/find-maximum-value-of-interpolation-function-obviously-wrong-result

 
Minimizing and maximizing interpolation function has already been asked 
and answered, see here for example. 
 
Yet, I observe a strange behaviour. Well, I can understand that the 
wrong guess of  ...
 

- asked by anderstood (11 votes), answered by Karsten 7. (12 votes)

1.1.1.5 Set of integers not divisible by smaller set of primes

http://mathematica.stackexchange.com/questions/58520/set-of-integers-not-divisible-by-smaller-set-of-primes

 
Let $p_n$ be the sequence of prime numbers, and $s(x,n)=$ the set of 
integers less or equal than $x$ that are not divisible by 
$p_1,\dots,p_n.$ I can define it as follows: 
 
...
 

- asked by martin (10 votes), answered by Mr.Wizard (14 votes)

1.1.1.6 Neumann boundary conditions in NDSolve over nontrivial region

http://mathematica.stackexchange.com/questions/58412/neumann-boundary-conditions-in-ndsolve-over-nontrivial-region

 
The problem I would like to solve involves diffusion in the following 
region 
 
reg = ImplicitRegion[-5 <= x <= 5 && -5 <= y <= 5 
&& x^2 + y^2 >= 1^2, {x, y}]; 
...
 

- asked by Greg P (10 votes), answered by user21 (9 votes)

1.1.1.7 Is garbage collection broken in version 10.0.0?

http://mathematica.stackexchange.com/questions/58375/is-garbage-collection-broken-in-version-10-0-0

 
In version 10.0.0 under Windows I am observing the following behavior: 
 
Do[Module[{foo}, foo[x_] := 1; foo[0]], {10}] 
 
Names["foo$*"] 
 
 
 
{"foo$593", "foo$594", "foo$595", "foo$596", "foo$597",  ...
 
- asked by Mr.Wizard 9votes