3.4.1 Top new questions this week

3.4.1.1 Exponential fitting - isn't actually a BUG there?

http://mathematica.stackexchange.com/questions/105002/exponential-fitting-isnt-actually-a-bug-there

 
There are many questions on this site about wrong exponential fitting in Mathematica but no one considers this well-known problem as a potential bug. Usually people suggest well-known workarounds  ...
 

- asked by Alexey Popkov (20 votes), answered by Sjoerd C. de Vries (6 votes)

3.4.1.2 Detecting components in timeseries

http://mathematica.stackexchange.com/questions/104950/detecting-components-in-timeseries

 
I'm looking at this sequence of values: 
 
 
 
I'd like to detect the points where the center of the time-series shifts (around x=1000 and x=2000). Many of the transforms and smoothing methods I have  ...
 

- asked by M.R. (17 votes), answered by blochwave (22 votes)

3.4.1.3 Generating Tuples with restrictions

http://mathematica.stackexchange.com/questions/105139/generating-tuples-with-restrictions

 
I am interested in a certain subset of all tuples. Generating all with Tuples and then filtering is wasteful, and will "blow up" very quickly. 
 
For a concrete example, let's say I want to find all  ...
 

- asked by Kiro (13 votes), answered by Kuba (12 votes)

3.4.1.4 Grid cuts my images

http://mathematica.stackexchange.com/questions/105061/grid-cuts-my-images

 
Bug introduced in V9.0 or earlier 
 
and persisting through V10.3.1 or later 
 
 
 
pic2 = ImageResize[ 
ImageCrop@Rasterize@Graphics@Disk[], 
{Automatic, 40}] 
 
 
 
 
 
 
Grid[{{pic2}}] 
 
 
 
 
 
 
This is just  ...
 

- asked by Kuba (11 votes), answered by Coolwater (7 votes)

3.4.1.5 Non Standard Eigenfunction Plots of the Laplacian Over the Unit Square

http://mathematica.stackexchange.com/questions/105264/non-standard-eigenfunction-plots-of-the-laplacian-over-the-unit-square

 
I have recently been plotting eigenfunctions of the laplacian over the unit square using the NDEigensystem command. However, I have noticed something in the plots which puzzles me. 
 
Below is an image  ...
 

- asked by Mr S 100 (11 votes), answered by Jens (12 votes)

3.4.1.6 How to count the number of the tube

http://mathematica.stackexchange.com/questions/105229/how-to-count-the-number-of-the-tube

 
There is a picture 
 
 
Get the binary image 
 
binimg = ColorSeparate[img][[2]] // Binarize[#, 0.25] & // Thinning 
 
 
 
 
Visulize the result of regconization 
 
lines = ImageLines[binimg, 0.074]; 
...
 

- asked by yode (11 votes), answered by nikie (7 votes)

3.4.1.7 Detecting X or O in a small image

http://mathematica.stackexchange.com/questions/105327/detecting-x-or-o-in-a-small-image

 
I am making a robot that plays Tic Tac Toe 
 
 
 
Currently, I have code that will parse the board and separate it into an array of 9 images, each space on the board. How can I detect if the image  ...
 

- asked by Jenny (10 votes), answered by John Conor Cosnett (17 votes)