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Could someone please explain what is wrong in my function?
function [Sign] = signum(A) The indices (r,c) belongs to the caller of the function, not inside the function. You call this fun...

5 years ago | 0

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Text doesn't change in guide while i can see it change in the commande window
It is not the cause of your problems, but global variables are a shot in your knee. Avoid them consequently. Instead of searchin...

5 years ago | 1

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Error in sort function when grouping events
Use the debugger: dbstop if error Afterwards start your code again. When Matlab stops at the error, what is the contents of rp...

5 years ago | 0

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How to combine matrices with different size but preserve elements with same value?
Do you mean union? A = [1; 5; 8; 9]; B = [1; 2; 4; 5; 7; 9]; C = union(A, B)

5 years ago | 0

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Answered
How to sum specific elements of a matrix
The most efficient solution is to ask in the forum, because this is faster than solving this problem by your own ;-) X = randi(...

5 years ago | 0

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Calculating Integral using Array Input
You do need a loop to get the best solution. Remember that integral is an adaptive method, which creates finer grids until a cer...

5 years ago | 0

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Answered
I have P=[2 3 4 0 5 1 0 2 ]; and I want to create a loop to remove zeros from P and calculate C, description in the code
P = [2 0 4 0 5 1 2 0 ]; zeroIndex = find(P == 0); for k = 1:numel(zeroIndex) Q = P; Q(zeroIndex(k)) = []; ... Ins...

5 years ago | 0

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Answered
Solve first ode using ode45
You can modify the examples of the documentation easily, see: doc ode45 Temperature0 = 6.2; % Your initial value [Time...

5 years ago | 0

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exit from a nested loop
"I correctly exit from the inner while loop but afterwards it does not increment i" Why do you assume this? The outer loop is n...

5 years ago | 1

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Answered
Group files with same names
Folder = 'D:\Your\Data\Folder'; FileList = dir(fullfile(Folder, '*.jpg')); FileName = {FileList.name}; Name = unqiue(st...

5 years ago | 0

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"Access Elements of a Nonscalar Structure Array" issue
You cannot access fields of deeply nested structs in Matlab. You need a loop to do this.

5 years ago | 1

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How to use ODE45 to solve 2nd order differential equation with random variables in it?
dt = 0.01; tf = 30; tspan = dt:dt:tf; y0 = [0;100;0;10]; for k = 1:100 ms = 10 + randn; mu = 20 + randn * 2; ....

5 years ago | 0

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Answered
While loop and randomization
x = [1 1 1 2 2 2 3 3 3]; ready = false; while ~ready y1 = [x(randperm(numel(x))); x(randperm(numel(x))); x(randperm(nume...

5 years ago | 0

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Evaluate function handle for each value in vectorized form
alpha = 1; n=10; rng default beta_all = randn(n, 1); gamma_all = randn(3, n); res = num2cell(alpha * beta_all.' .* gamma_...

5 years ago | 0

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Answered
Angle between two lines
This cannot work. There is no realtion between Theta and Phi. Therefore the parameters to define the blue line does not allow to...

5 years ago | 0

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How to read multiple .spc files
Please read: https://www.mathworks.com/matlabcentral/answers/57446-faq-how-can-i-process-a-sequence-of-files

5 years ago | 0

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Answered
how to common string data in two string celland their indexes
[Both, indexPop, indexNames] = intersect(population, names) Here indexNames is not a cell, but a vector, which is more useful f...

5 years ago | 0

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Answered
How to populate a new variable from an old one
You are aware of the warning about creating variables dynamically. So why do you try to do this? This method is a shot in you kn...

5 years ago | 1

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Unrecognized function or variable, some functions can be accessed, some not.
After inserting folders in Matlab's path, remember to refresh the toolbox cache: rehash toolbox % or permanently: rehash tool...

5 years ago | 0

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Getting Nan after using expm
See the help text of expm: Although it is not computed this way, if A has a full set of eigenvectors V with corresponding eigen...

5 years ago | 0

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Trying to solve 3 simultaneous equations, results seem erroneous
syms x y z eqn1 = 109*x + 54*y + 124*z == 7.51; eqn2 = 57*x + 30*y +63*z == 3.17; eqn3 = 30*x + 17*y + 31*z == 1.24; sol = s...

5 years ago | 1

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Answered
how to import a saved figure into a subplot
You can create the subplots and copy the axes of the opened figures using copyobj.

5 years ago | 0

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I need to combine all these measurements as you can see the scale is different for every measurement.
measurement = measurement - measurement(1)

5 years ago | 1

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Missing file error when installing
Please try to disable the virus protection software during the installation. There have been several related questions in the l...

5 years ago | 1

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Is there a way to modify default function template
See e.g. https://www.mathworks.com/matlabcentral/fileexchange/41624-newfile

5 years ago | 2

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Grouping identical matrices in cell array
Start with a simplified version of your code: n = numel(a); groups = zeros(n, 1); counter = 0; for i = 1:n if gro...

5 years ago | 2

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Interpolate non-uniform signals
John D'Erricos warning is important: The data do not look like an interpolation is fair. But if you have a good reason to do thi...

5 years ago | 0

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Error in pack command
"My program command is pack temp.dat." What does this mean? The builtin pack command does not accpet any inputs. Therefore I gu...

5 years ago | 0

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single precision mode and difference between Matlab and cortex-m
This is the expected behaviour. There is not exact representation of 0.06 in IEEE 754 32 bit floating point numbers, neither in...

5 years ago | 1

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Reading Text file from IMC company
From a certain byte in the text the contents is not plain ASCII anymore. I guess boldly, that this was a problem during writing ...

5 years ago | 0