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Felix


ETH Zurich, Switzerland

Active since 2011

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Professional Interests: Brain Function

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Answered
Question regarding plotting graph
As I understand this, the adjacency matrix only tells how the nodes are connected, not where each of them is located. So your c...

11 years ago | 0

Question


importdata() for large number of .txt files is veeery slow. How to improve it?
I use the simple code below to create a 3D Matrix out of a bunch (e.g. 200) of txt files. Despite preallocation it takes quite ...

11 years ago | 0 answers | 0

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answers

Question


Figures look completely different in Illustrator (exported as .eps)
<<http://i.imgur.com/BacgdG5.png?1>> On the right side of the image you see my figure as it should look like (rendered using ...

11 years ago | 1 answer | 0

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answer

Question


Can I place text on top of a figure irrespective of the current axis?
The problem that I have with the text() command is that it only works for the current axis. I have a figure with dozens of axes,...

11 years ago | 1 answer | 1

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answer

Question


lagged cross-correlation, how to deal with the signal borders??
I have two signals of say 300 time points. Now I just want to calculate the cross-correlation around an interesting region of t...

11 years ago | 0 answers | 0

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Question


Multistart lsqcurvefit with parallel processing on produces an error
so I have a lsqcurvefit problem defined with a function and I run it with MultiStart to get a global minimum. Everything works p...

11 years ago | 0 answers | 0

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Question


optimization/permutation problem: select those rows in a matrix whose mean produces the maximal value of a certain function
Lets say I have a matrix nxm and a certain function y=f(1:m) that uses a row (or the mean of several rows) of my matrix as inpu...

12 years ago | 0 answers | 0

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answers

Question


How to automatically distinguish a "good" from a "noisy" signal?
In the example below, you see on the left side a "good" signal, which in my case would be characterized by little fluctuation (e...

12 years ago | 0 answers | 0

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Question


Automatic decision wheter to include measurements or not, based on criteria? (or ICA?)
I don't think my problem is so exotic that there isn't already some tool available for matlab, but I don't know exactly what to ...

12 years ago | 0 answers | 0

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answers

Question


Weird histogram/images when recording with 16bit camera
Look at the picture below, the image should be a uniform dark gray (and it shows as such under labview). But somehow it looks a...

12 years ago | 1 answer | 0

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answer

Question


Simultaneously run a function and record a video
I am starting to become very disappointed by matlab. After a long search I found at least a workaround to run two functions si...

12 years ago | 1 answer | 0

1

answer

Question


GUI error "Attempt to reference field of non-structure array. " at start
(I found almost the same problem in this question: http://www.mathworks.com/matlabcentral/answers/51874-how-do-i-create-handle-v...

12 years ago | 3 answers | 0

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answers

Question


imaqtool + firewire camera (dcam driver) = strange artefact (see picture)
I am using Matlab 2012a 32bit, and I installed the dcam drivers from the imaqtoolbox. It recognizes my camera (Basler scout scA1...

12 years ago | 2 answers | 0

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answers

Question


How to implement a "nonlinear" convolution?
This is a more general mathematical question, but I am asking this here since it may be a frequent problem and perhaps matlab im...

12 years ago | 1 answer | 0

1

answer

Question


Crop a plot without changing ratio/axis tick positions?
I have this plot below consisting of several subplots: <<http://i.imgur.com/ETPXj.png>> Now I would like to move the rows ...

12 years ago | 1 answer | 0

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answer

Question


How to make a reference to multiple subelements of a cell without for loop (to create a plot)
lets say I have a axb cell , each cell contains a 1xn double I want to make a plot like this plot({1,:}(1,end)) , i.e. for t...

12 years ago | 2 answers | 0

2

answers

Question


Search folders/paths with strfind: how to do excluding search?
With the code below (adapted from an old question here) I create a list of all folders and subfolders within a give path (using ...

12 years ago | 1 answer | 0

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answer

Question


How to fit parameters in an m.file to a curve?
To understand my problem it would be best if you run this m file: https://dl.dropbox.com/u/368757/curve_fitting_problem.m ...

12 years ago | 1 answer | 0

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answer

Question


How do I search these matlab cells/structures?
I saved my experimental data in this mixture of cells and structures, but now I'm having a hard time searching in it. first t...

12 years ago | 1 answer | 0

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answer

Answered
Skull striping without affecting tumor region
Unless you have a huge number of images, I think the best solution is to mask it manually, because no algorithm is as good as th...

12 years ago | 0

Question


calculate the (geometrical) distance between points of a matrix
Lets say I have a large matrix full of zeros, with a few numbers (1,2,3,4,5) located at various positions. Now I want to calcul...

13 years ago | 1 answer | 0

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answer

Question


Extract time series data from figure
I have certain data only as .fig files but I want to extract the time series (x- and y points) of a particular graph and have th...

13 years ago | 1 answer | 0

1

answer

Question


uigefile or uiimport for multiple files?
For my script I want to import a bunch of text files at once, preferably with the user interface like in uigefile or uiimport. ...

13 years ago | 1 answer | 0

1

answer

Question


Permutation/shuffling of number sets
I have two sets of numbers, e.g., [A1 A2 A3] and [B1 B2 B3]. Now I want to swap some of them between the two sets, ...

13 years ago | 3 answers | 0

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