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M


Last seen: 1 jour ago
288 total contributions since 2017

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Answered
Unrecognized function or variable x
As the error message says, the variable 'x' is not declared before it is used line 7. How do you execute this function ? Is i...

1 jour ago | 0

Answered
MIMO control system with marginally stable poles at the origin
How do you test the pole zero locations ? Here, you have a pole equal to 0.

25 jours ago | 0

Answered
Determine suitable control gain for the controller
Well, this is a vague question... To tune the gain you either need a model of your system and do some calculations, or if you d...

29 jours ago | 0

Answered
How to save indices of a certain region of a matrix
I am not sure if I understood your question but here is a second simple example: A = [10 11 12;13 14 15; 16 17 18]; B = [14 15...

environ un mois ago | 0

| accepted

Answered
i would like to create a randi function that will allow me to generate two arguments at one
Suppose you have a n by n matrix: n = 5; T = magic(n); You can access a random cell in this matrix by using: c = randi(n,[1,...

environ un mois ago | 0

| accepted

Answered
MATLAB R2019A
Here: https://www.mathworks.com/pricing-licensing.html?prodcode=ML&intendeduse=student

environ un mois ago | 0

Answered
i m getting 'subscript assignment dimension mismatch' in my code in 'line 18'
You have a problem of dimensions at line 18: pilotdata(p,J)=Mod(p,k); At the first iteration, it holds: p = 1,...

environ un mois ago | 0

| accepted

Answered
Constrained Global Optimization Problem with MultiStart, GA and HybridFunction using Parallel Processing whithout Ste
Update your code like this: A=rand(2,2); B=[1 ;0]; n = length (A); Com = B; for x = 1: n-1 Com = [Com, (A ^ (x)) * B]...

environ un mois ago | 1

Answered
How can I work on a valuable name with a minus sign in it...?
From this documentation: https://mathworks.com/help/matlab/matlab_prog/variable-names.html "valid variable name starts with a ...

environ un mois ago | 1

| accepted

Answered
I don't get the correct output from my function
When you change from -5 to -10, the absissa of the plots change, yes. But the value of the function does not change. What makes ...

environ un mois ago | 0

Answered
How do I get my function to return a numerical value?
The function HW5VJ0 returns a function handle. To get a numerical value, you have to call it with the specified value of x: x =...

environ un mois ago | 0

| accepted

Answered
How to make a 3D plot of 41x41x41 datapoints
You can have a look here to see different solutions to plot data in 3D: https://mathworks.com/help/matlab/visualize/creating-3-...

environ 2 mois ago | 0

Answered
I want to apply bubble sort
bubblesort is defined such that it takes only one input (the table to sort). And you call it with two inputs : A=bubbleSort(A,9...

3 mois ago | 0

| accepted

Answered
Obtaining result from a previous point
Have a look here: https://mathworks.com/help/matlab/matlab_prog/loop-control-statements.html https://mathworks.com/help/matlab...

3 mois ago | 0

| accepted

Answered
symbolic system of equation
First problems on lines 2 to 4: gamma=sym(zeros(i,1)); w=sym(zeros(i,1)); l=sym(zeros(i,1)); i is not yet defined.

3 mois ago | 0

Answered
What is the difference between the fixed point and floating point modeling in simulink ?
Have a look at these documentations : https://mathworks.com/help/comm/ug/floating-point-and-fixed-point-data-types.html https:...

4 mois ago | 1

Answered
select from matrix!
When executing the command it outputs : b = 3 2 2 1 The command : b= [a(1,2:3);a(2,1:2)] sel...

4 mois ago | 1

| accepted

Answered
plot standard deviation as a shaded area
You can use the code directly from this answer: https://mathworks.com/matlabcentral/answers/180829-shade-area-between-graphs#an...

4 mois ago | 1

Answered
How to make a array from a loop?
You can do something like: nb = 1440; j = zeros(1,nb); Z = zeros(1,nb); for i = 1 : nb Z(i) = powerConsumption(i) - sol...

4 mois ago | 0

Answered
System unit-impulse response for given tau
There is a problem of dimensions for matrix multiplication at line 5 and 6 : x1 = (A/tau1)*exp(t/-tau1) x2 = (A/tau2)*exp(t/-t...

4 mois ago | 0

Answered
When we use the ";" at the end of a command line and when we do not use it
From https://www.tutorialspoint.com/matlab/matlab_syntax.htm : Semicolon (;) indicates end of statement. However, if you want t...

4 mois ago | 0

Answered
adding element to a matrix row
You can read this to know about matrix indexing: https://www.mathworks.com/company/newsletters/articles/matrix-indexing-in-matl...

4 mois ago | 0

| accepted

Answered
Control of inverted pendulum
I don't find anything similar in literature LQR algorithm with state estimator is very common and you can find plenty of exampl...

5 mois ago | 0

Answered
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 mois 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 mois ago | 0

Solved


Find the maximum number of decimal places in a set of numbers
Given a vector or matrix of values, calculate the maximum number of decimal places within the input. Trailing zeros do not coun...

5 mois ago

Answered
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 mois ago | 0

Solved


Check that number is whole number
Check that number is whole number Say x=15, then answer is 1. x=15.2 , then answer is 0. <http://en.wikipedia.org/wiki/Whole...

5 mois ago

Answered
('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 mois ago | 1

| accepted

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 mois ago | 0

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