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plot 2 curves with 'very close' y values
If you want to see the differences and at the same time keep values of your vectors, i would recommend something like this: ...

13 years ago | 0

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How to count the amount of cells?
your_count = cellfun(@(x) numel(x),your_cell_array);

13 years ago | 4

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Answered
How can I get MATLAB to leave a loop when any key is pressed?
This is a bit of a hack, and will probably slow down your code. The idea is to create a figure, and check whether a key has been...

13 years ago | 1

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how to delete repated rows with out re order them
[~,idx]=unique(cell2mat(levelx),'rows','first'); unique_levelx = levelx(sort(idx),:);

13 years ago | 1

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Answered
how to convert a vector to a number
a = randi(9,1,5); your_num = sscanf(sprintf('%d',a),'%d'); or alt_sol = sum(a.*repmat(10,1,numel(a)).^(numel(a)-1:-1:...

13 years ago | 0

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Answered
How can I plot two vectors using the plotyy command, and after that plot two points with different y-scales on the same graph?
[AX,H1,H2] = plotyy(Va,la,Va,Pa); %handles to the axes will be in AX plot(AX(1),Va(mpp), Ia(mpp),'bo'); plot(AX(2),Va(mpp),...

13 years ago | 0

Answered
How to correct the assignment Error?
Try img_hist(i)= sum(sum(sum(im==(i-1)))); _im_ might be a three dimensional matrix.

13 years ago | 1

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Answered
problem with manipulation a vector randomly
You could still use bsxfun, but instead of creating a vector of random numbers, if I understood correctly, you might need to cr...

13 years ago | 0

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How to calculate the mean for specific rows in a cell using cellfun
It is not really clear how you want to split your data, so I added two variables, rowsFromStart and rowsFromEnd so you can speci...

13 years ago | 0

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Problem in generation of random number
This will do what you ask, both row and column wise. It is not the most efficient thing out there, but at least it should give y...

13 years ago | 0

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Answered
Complex numbers in matlab
To look how numbers are stored in .mat files you could look at the .mat file <http://www.mathworks.com/help/pdf_doc/matlab/matfi...

13 years ago | 0

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What is the code?
doc gamrnd The skewness is a function of one of the two parameters of the distribution, that you can set as you see fit. You...

13 years ago | 0

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Answered
Compiling C++ file to *.mex64 leads to "unresolved external symbol" (conversion from size_t to int most likely the reason"
From your error message, the program not working has nothing to do with the conversion from size_t to int. That in itself might ...

13 years ago | 0

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data generation using bootstrap method
Bootstrapping consists in selecting a subset of the data. That sounds like a job for _randperm()_ a = randi(60,1,50); subs...

13 years ago | 0

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Getting the algorithm behind the pos routine in matlab?
I will guess that you are talking about _symrcm()_. It is a built-in Matlab function. Here is what the documentation says: Th...

13 years ago | 0

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Arrange a matrix with repeated rows
[idx idx] = sortrows(sort(a,2)); a = a(idx,:);

13 years ago | 0

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How to reverse a number
A vectorized, faster alternative For integers: your_answer = flipud(sscanf(fliplr(sprintf('%d ',a)),'%d ')); And float...

13 years ago | 0

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Matrix and vector multiplication elementwise
bsxfun(@times,a,h)

13 years ago | 0

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Answered
Rolling max/min maximum and minimum
Without a toolbox: x = randi(10,1,100); n = 2; maxVec = arrayfun(@(a,b) max(x(a:b)),1:numel(x)-n+1,n:numel(x));

13 years ago | 0

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License error or the function?
It looks like you are using a license server, and that all the licenses for the statistics toolbox are in use ( _ecdf()_ is a fu...

13 years ago | 1

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Answered
reshape a matrix in a special manner
Faster: a = rand(100,130); [m n] = size(a); a = reshape(a,m,10,n/10); %Provided n is divisible by 10 your_mat = squeez...

13 years ago | 0

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Can anyone explain this output?
It's just because of the way the data is formatted for display. doc format Set the same format in the two machines if you...

13 years ago | 1

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Can we remove a bar from histogram which drawn using 'hist' function?
idx = your_data ~=0; You can now calculate the mean and standard deviation: your_mean = mean(data(idx)); your_std = me...

13 years ago | 1

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How to extend the matrix size by splitting up a column in two columns
A= [10 2 0.0 6;... 10 2 18.0 6;... 10 2 1800.0 6;... 10 2 1810.0 6;... 10 2 2215.0 6]; Str = m...

13 years ago | 1

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Answered
NaN and Infs popping in my matrices after a few iterations of EM algorithm
It sounds like you are running into numerical stability issues. Look at the following example, that might help you understand wh...

13 years ago | 0

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Sorting variable names in alphabetical order
Looks like you might want to use _orderfields()_ a.b = 1; a.a = 2; a.m = 4; a.h = 5 a = b: 1 a: 2 ...

13 years ago | 4

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Answered
find number of columns on text file
delimiter = ' '; %or whatever fid = fopen('myFile.txt','rt'); tLines = fgets(fid); numCols = numel(strfind(tLines,delimit...

13 years ago | 7

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Answered
Using datenum on a cell array with different date formats
myDates = {'31.12.2009 23:58:31'; '25.12.2009'; '15.12.2009 15:18:10'}; idx = cellfun(@(x) isempty(regexp(x,':')),myDates); ...

13 years ago | 0

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Answered
How can I make use of multiple cores in Matlab linear algebra
To give you a clear answer, it would be necessary to look at the source code, know what compiler the Mathworks used, what compil...

13 years ago | 0

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Generating C/C+ code for the Optimization bintprog function
It is not supported, so there really is no solution, short of asking the Mathworks to support it. You could write it yourself, b...

13 years ago | 0

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