Professional Interests: Brain Function

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...

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...

presque 7 ans 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 ...

environ 7 ans ago | 0 answers | 0

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 ...

plus de 7 ans ago | 1 answer | 0

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,...

plus de 7 ans ago | 1 answer | 1

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...

plus de 7 ans ago | 0 answers | 0

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...

plus de 7 ans ago | 0 answers | 0

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...

presque 8 ans ago | 0 answers | 0

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...

presque 8 ans ago | 0 answers | 0

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 ...

presque 8 ans ago | 0 answers | 0

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...

presque 8 ans ago | 1 answer | 0

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...

presque 8 ans ago | 1 answer | 0

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...

presque 8 ans ago | 3 answers | 0

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...

presque 8 ans ago | 2 answers | 0

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...

environ 8 ans ago | 1 answer | 0

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 ...

environ 8 ans ago | 1 answer | 0

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...

environ 8 ans ago | 2 answers | 0

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 ...

environ 8 ans ago | 1 answer | 0

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 ...

plus de 8 ans ago | 1 answer | 0

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...

plus de 8 ans ago | 1 answer | 0

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...

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...

plus de 8 ans 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...

presque 9 ans ago | 1 answer | 0

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...

environ 9 ans ago | 1 answer | 0

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. ...

plus de 9 ans ago | 1 answer | 0

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, ...

plus de 9 ans ago | 3 answers | 0