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...

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...

2 days 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.

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.

26 days 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...

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...

30 days 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...

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...

1 month 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,...

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,...

1 month ago | 0

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Answered

MATLAB R2019A

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

MATLAB R2019A

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

1 month 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,...

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,...

1 month 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]...

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]...

1 month 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 ...

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 ...

1 month ago | 1

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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 ...

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 ...

1 month 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 =...

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 =...

1 month ago | 0

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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-...

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-...

2 months 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...

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 months ago | 0

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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...

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 months 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.

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 months 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:...

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 months 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...

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 months 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...

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 months 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...

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 months 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...

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...

5 months 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...

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...

5 months 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...

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...

5 months ago | 0

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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...

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 months 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...

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 months 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...

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 months 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 months 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...

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 months 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 months 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...

('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 months ago | 2

| 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...

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 months ago | 0