Toggle button background color unable to change
I would first check if you are able to change the color of the togglebutton manually, e.g. h = uicontrol('style','togglebutt...

7 years ago | 0

Matlab GUI and slow execution
not much we can do without seeing the code, but as you suggest one possible reason for the slowing down could be if the number o...

7 years ago | 0

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Calling some MATLAB function with suppressed outputs
Unfortunatley there is not (as far as I know; see for example <http://www.mathworks.com/matlabcentral/newsreader/view_thread/156...

7 years ago | 0

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Hierarchical clustering with only merging neighbouring clusters
I would suggest to request the code from the authors (Thirion et al.? if so, you can start here <https://github.com/bthirion/fro...

7 years ago | 0

what is the fastest way to do many univariate regression? same Y against different x, one x at a time
Not terribly different in practice, but if you want you could compute all of those regressions simultaneously using a sparse blo...

7 years ago | 0

Matlab code problem (calculate eigenvalues and eigenvectors)
In your example the matrix A is not <https://en.wikipedia.org/wiki/Normal_matrix normal> (check that A*A'-A'*A is not zero), hen...

7 years ago | 0

How to perform skull stripping using matlab?
Assuming that you do not have simply that slice but the entire MRI scan (e.g. a filename.nii or filename.img file) I would sugge...

7 years ago | 3

Random zero-restrictions in vector
B1 = B; i = randperm(numel(B)); c = sparse(find(B(i)),nonzeros(B(i)),1); B1(i(~any(c&cumsum(c,1)>repmat(A,size(c,1),1)...

7 years ago | 1

Combine convolution filters (bandpass) into a single kernel
Convolution is a linear operation so yes, you can combine the two filtering operations into one. Just make the filters the same ...

7 years ago | 0

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Substituting a number for NaN in anonymous function
There may be "cleaner" ways to do this but one possibility would be: g = @(x) [f(x) 1]*sparse(1+isnan(f(x)),1,1,2,1); ...

7 years ago | 1

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evalin in caller a command that assigns in caller
There is no viable work-around for nested evalins, but your particular example does not really require them. You could for examp...

8 years ago | 0

Why is drawnow ignoring object ordering during animation?
You may use plot3(x, y, z,...) and text(x, y, z,...) and control the relative front/behind positions of these elements with the ...

8 years ago | 0

ind2sub doesn't work
You are funny. _ind2sub_ reshapes the _siz_ first argument to match the number of output variables used (in your case a singl...

8 years ago | 1

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eig versus svd functions?
SVD is a decomposition for arbitrary-size matrices, while EIG applies only to square matrices. They are very much related: Th...

8 years ago | 2

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How can i create a vector with specific values at different positions?
close enough: v([3:7 10:14 16:18 20:25]) = 1;

8 years ago | 1

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Efficient matri x calculation
data_new = ids(data);

8 years ago | 1

scatter plotting color coded
perhaps something along these lines: % your data (assuming column vectors) lat = convn(randn(1e3,1),hanning(100)); l...

8 years ago | 0

Splitting a vector into vectors of different length
This is interesting, perhaps something like this would do (this implements a greedy correction of your initial estimate of the d...

8 years ago | 0

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picking a random solution to linear equations
I like your _Matlab can do anything_ remark. The _evenly space_ condition is a bit hard to achieve, but here some thoughts anywa...

8 years ago | 1

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GUI push button problem
You simply need to add the line: drawnow; to the code running the simulation steps so that Matlab flushes the event queue...

8 years ago | 2

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regexp and string rearrange in text file
something along these lines: % reads file into cell array lines = textread('lsit2.txt','%s','delimiter','\n','whitespace...

8 years ago | 0

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How to run m-file from another m-file by input string
try this: ... fclose(f); rehash; run(save_name); also make sure that your variable _save_name_ does not include the...

8 years ago | 0

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Inserting NaN in particular spots of my matrix, all while "preserving" or shifting all other numbers
If I am interpreting correctly (not really sure if this is what you mean by "shifted down") this should do: c = nan(size(a...

8 years ago | 0

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Regarding Mutual information calculation of two binary strings
When computing mutual information you may assume that 0*log(0) == 0. In your code you could remove all the "if XXX==0" checks,...

8 years ago | 1

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corrcoef : p value interpretation
There are several issues here: *1) regarding why you are getting not significant values in your example:* N = 1000; X =...

8 years ago | 4

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How to read files' names efficiently
Something like: files = dir; % Your list of files [~,filenames] = cellfun(@fileparts,{files.name},'uni',0); % Your list ...

8 years ago | 0

Updating handles from within Position Changed Callback
Your figure might have a resizefcn callback that could be reverting those values. Check: get(gcf,'resizefcn');

8 years ago | 2

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Help with the interpolate function

8 years ago | 0

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Quadratic time detrending. Any help or code ???
Yes, that should work, you just need to define: Ynew = Y - Th; to get the new "detrended" timeseries.

8 years ago | 0

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Turn my (easy) for loop into a recursive function?
You almost got it. Your are just: 1) overwriting the variable N, which you probably did not intend; and 2) including an unnecess...

8 years ago | 0

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