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Breaking up a computation vs "..." to continue line - Huge Speed Difference !?
I don't think it has anything to do with "...". Shot in the dark: Cache locality? Maybe big_expression(n) and big_expression(...

más de 13 años hace | 1

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deleting multiple rows in a matrix
your_mat = your_mat(113476:end,:); Please read the Getting started part of the documentation.

más de 13 años hace | 1

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How to combine this R, G, B values of an image so that i have an image?
your_image = cat(3,R,G,B);

más de 13 años hace | 3

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how can i make a storage in simulation for matrix ?
You should probably use a cell array: my_result = cell(1,k); for ii = 1:k my_result{i} = ssvs(e,y,q,m,k); end ...

más de 13 años hace | 0

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Creating a function with a logical output.
It does return logical for me. What does class(TLU(rand, rand, rand)) return? If *ans* returns something different, y...

más de 13 años hace | 0

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How can i do optimization in matlab?
Are you sure you asked the right question? If so, what you are asking is: y-x = at; %Find a and t Since y and x are known...

más de 13 años hace | 0

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Codistributed arrays taking too long to run
It's because even though you distribute your array amongst the workers, matrix multiplication might not be efficient, depending ...

más de 13 años hace | 0

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another quick question about string read
*EDIT* sprintf('%s_%d', 'modelsq', gesNum);

más de 13 años hace | 1

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How can I draw hysteresis loop using matlab
x = rand(10,1); y = rand(10,1); quiver(x(1:end-1),y(1:end-1),diff(x),diff(y),0); Please accept an answer if it helps yo...

más de 13 años hace | 0

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quick question about string read
load(a1);

más de 13 años hace | 0

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how to interface using shape file data in matlab?
doc shaperead

más de 13 años hace | 0

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Passing Functions and m-files to functions
myStr = 'P1.m' function [result] = myFun(someArg, myStr) [str str] = fileparts(myStr); run(str); %calling...

más de 13 años hace | 0

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Apply a mask to 4D medical images in a vectorized way
data = rand(144,144,12,25); your_mask = rand(144,144) > 0.5; Assuming you want to multiply by the mask: your_result = ...

más de 13 años hace | 2

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Creating a char matrix
your_mat = repmat('31T',15443,1); Note that the dimensions of this array will be 15443 times 3 (the number of characters in...

más de 13 años hace | 1

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ommiting blanks in a string
your_array = char(randi([32 127],100,10)); for ii = your_array' sub_set = ii(ii ~= char(32))' end

más de 13 años hace | 0

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variables in m files
function [A B C] = ImAFunction(d,p,t) FC = 360; d = hex2dec (d); p = hex2dec (p); t = hex2dec (t); A = (d*0...

más de 13 años hace | 0

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error using the example script of PCA
data = imread('result.png'); data = bsxfun(@minus,data,mean(data,2)); Note that this will not solve your problem, as the...

más de 13 años hace | 0

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Declare equality in Symbolic Math Toolbox
You could do like this: syms z x1 x2 x3 x4 eqs = [-z+x1+x2; -z+x3+x4; x1+x2-x3-x4]; solve(eqs) But it is rather point...

más de 13 años hace | 0

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Hi, Can anyone tell me how to find average of three successive values in matlab, i have an array of 200 values
your_vals = randi(100,1,200); filterLength = 3; %One option your_result_1 = conv(your_vals,ones(1,filterLength)./fi...

más de 13 años hace | 0

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Custom output of the fprintf
Here is a small script to do what you asked for: val = -0.0000001245332; %for example tempVal = abs(val); ord...

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Chi squared test to test if data is from same distribution
You could use a two-sample Kolmogorov-Smirnov test. This tests the hypothesis that the two samples come from the same distributi...

más de 13 años hace | 0

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Series generated by recursive formula
You could always write a recursive function, but I would much rather use the for loop as it is much simpler to understand, IMO, ...

más de 13 años hace | 0

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Finding maximum and minimum values of an array by specifying the range.
Using _accumarray()_, assuming _data_ is a two column array where the first column is Matlab's serial date number: idx = flo...

más de 13 años hace | 0

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Creating a static library using the .mex command
That would depend on the compiler you use. Just compile some object files ( _/c_ option for visual studio, _-c_ for gcc). Then y...

más de 13 años hace | 0

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Extracting data from a structure
I am not sure I understand your question. But if what you mean is that you have a cell array of structures and that you want to ...

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Import binary data to array
status = fseek(fid,3,'bof');

más de 13 años hace | 0

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Add rows to txt file in order to create a matrix
Saving the permutations one by one as they are generated sounds very inefficient due to i/o overhead. It is probably best to sav...

más de 13 años hace | 3

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Using sign(x) with -0.00?
your_mat(abs(your_mat) < 100*eps) = 0; %or some other limit

más de 13 años hace | 0

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means of a number of rows
data = rand(86400,4); your_data = reshape(data,1800,[],4); your_data = permute(your_data,[1 3 2]); your_average = squ...

más de 13 años hace | 0

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getting plot projection in 3d
aH = axes; your_data = randn(1000,3); oneMat = ones(size(your_data,1),1); plot3(your_data(:,1),your_data(:,2),your_da...

más de 13 años hace | 1