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Find elements in a matrix
You can get the indices with: idx = A >= 30 & A <= 65 To know the number of values corresponding to the condition: numel(find...

5 years ago | 0

Answered
Is there any maximum for the size of matlab table?
It depends on what you want to store into this table. You can have a look here to find more informations: https://mathworks.com...

5 years ago | 0

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function rand with variables
You can use something like this, adapt it to your case: a = 1; b = 2; c = 3; A = [a b c]; nb = 10; vec = zeros(1,nb); for...

5 years ago | 0

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('tf' requires one of the following) "tf commend is not working" HELP PLS!
Your code is right, but you do not have the required toolbox. The function tf is part of the 4 toolbox listed in the error messa...

5 years ago | 6

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Answered
Any methods to solve optimal control indirect method such as Pontryagin Minimum Principle?
Hi, here are some related questions to start with: https://mathworks.com/matlabcentral/answers/440335-how-to-implement-optimal...

5 years ago | 0

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Answered
Vectors must be the same length.
What lines causes the error ? Following one ? g = plot(t,delta_omega_laser ); t and delta_omega_laser must have the same leng...

5 years ago | 0

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Answered
assign variable name to Function Output Variables
Why don't you just change [wave_rms]=waveform(wave) into [Uph_rms]=waveform(wave) ?

5 years ago | 0

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Taking in a function as an argument
How is testfunc defined ? Here is a simple working example: function out = func(inputfunc, constant1, constant2) out = inputf...

5 years ago | 0

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How idx runs and give its value ?
abs(a-n) = 1.8000 2.0000 4.0000 6.3000 6.5000 then min(abs(a-n)) = 1.8, and the location of this minimum value...

5 years ago | 0

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Servo control without controller
have you tried something so far ? Do you need help to connect matlab and the motor ? In this case you should specify what is y...

5 years ago | 0

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plot a defined function
plot the function N(T) versus T in range 0.1 to 14 T is known ? T =[0.1 : 14 ] ? And you want to plot ne(T) ? In this case yo...

5 years ago | 0

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Problem with Discrete Controller Design
It could actually be both. It is indeed possible that the discretization with a given frequency brings problems such as oversa...

5 years ago | 0

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If the values are almost equal to each other,how do i plot the figure to see its curve? (not straight line )
I am not sure to understand the question, but the following code answer your question ? a=[1 2 3 4]; x=[x1 x2 x3 x4]; % your d...

5 years ago | 0

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obsvf confused by documentation
You were right, the documentation for obsvf function has been updated recently: https://mathworks.com/help/control/ref/obsvf.ht...

5 years ago | 0

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HOW TO MAKE FUNCTION HANDLING PROPERLY IN DIFFERENT MATLAB FILES?
The way to call functions in matlab is explained here: https://fr.mathworks.com/matlabcentral/answers/179803-calling-a-function...

5 years ago | 0

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Answered
How to take the average of different initial conditions
It is not clear what you want to do from the code you posted, especially the first loop : for j = 1: length (g) ... end ...

5 years ago | 0

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Not enough input argumaents
It depends on how you call this function, try to call if from the command window : x = 1; y = 2; s = add(x,y); And then you...

5 years ago | 0

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how to find matching elements of two colums vectors
It depends what you want exactly. Let's say you have two vectors a and b: a=[1;2;3;4]; b=[0;2;3;5]; To find the indices wher...

5 years ago | 0

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matlab 2014b windows 10
Follow this link and select the matlab version you want to download : https://mathworks.com/downloads/web_downloads/select_rele...

5 years ago | 0

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How to caculate a value for a step - the previous step
It depends on what you mean by "I have a value x". It is actuallyquite easy to do for a straightforward example, but it depends...

5 years ago | 0

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Restrict user string inputs
The problem comes from your conditions: ~strcmp(y,'i') | ~strcmp(y,'m') This is never true, even if you enter 'i' or 'm'. Wh...

5 years ago | 0

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How can I call a .m function with App Designer?
Yes it is possible, have a look at this tutorial and introduction video: https://mathworks.com/help/matlab/creating_guis/create...

5 years ago | 0

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Answered
facing problem in writing complex programme
Can you show the entire error message ? You have at least one error at line 5: part1=beta /lamda(0.5-delta+delta^2); sayi...

5 years ago | 0

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Answered
how to use a graph from user input as input to the matlab program
In this case, I recommend you use lsim: https://mathworks.com/help/control/ref/lsim.html

5 years ago | 0

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How can I plot an internal value in a state space model?
Given that the voltage is not a directly controlled input, I do no know how to get this value during a simulation. Is u the vol...

5 years ago | 0

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how to form matrix
From this documentation: https://mathworks.com/help/matlab/learn_matlab/matrices-and-arrays.html Try: m = [ m11 m12 ...

5 years ago | 0

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Expressing an even number in powers of 2 and a multiple of an odd number.
I would do something like a = 80; r = 1; d = a/2; while mod(d,2)==0 r=r+1; d=d/2; end

5 years ago | 0

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Simulink Serial Receive, Selection of communication port
This was a problem related to permission right, I had to acces to the device as an admin to be able to communicate with it.

5 years ago | 0

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Answered
Nyquist plot from 0 to Inf (only frequencies > 0)
If you specify the frequency as W = {WMIN,WMAX} WMIN and WMAX are real frequencies satisfying 0<=WMIN<WMAX<=Inf. So by settin...

5 years ago | 0

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How can the output be written in a new column (without overwriting the previous one)
You can use cell for that. You can try and adapt the following example: a=cell(3,1); for i=1:3 a{i}=ones(i,1); end a ...

5 years ago | 0