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Strange behavior when initializing empty cell in struct()
If you want to define the property as empty, then you should use '[]' instead of '{}'. obj = struct(MyProp=123, MyOtherProp=[])...

5 meses hace | 1

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I want to calculate the eigenvalues form the very huge sparse mass and stiffness matrix.
If eig() function is taking too long, you can use eigs() function. Example from mathworks eigs() site: A = delsq(numgrid('C',1...

5 meses hace | 0

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How to nest and call the fmincon function in Simulink?
EDITED: to fix the initial_values to be a 3x3 matrix instead of lambda Your issue was in the line initial_values=[lambda(1,1)...

5 meses hace | 0

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How to simulate code in symbolic form?
Here is one way, though it cannot solve it at one point I think so throws an error when asked to display the solution % assume ...

5 meses hace | 0

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delete zero in signal
Your question is a bit ambigious but if you just want to remove the 0 s from the signal you can use a switch and delay block to ...

5 meses hace | 0

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Unknown variables appearing in solutions for symbolic equation solver
This is shown in the documentation of solve, under Solve Polynomial Equations of High Degree. You should call the function wit...

5 meses hace | 0

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What is MATLAB doing when adding multiple ZPK transfer functions together?
Yes but you are doing a fractional algebra. To refresh your memory: a/b + c/d = (a*d + c*b)/(b*d) Since numerator stays b*d, ...

5 meses hace | 0

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Want to programmatically get the Maltlab status of (ready, busy), etc., in the bottom left corner of the window. What procedure will be used?
I recommend you use waitbar() function as an indicator of the progress within the code. f = waitbar(0,'Program started...'); %...

5 meses hace | 0

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How to save a output matrix in each iteration?
Here is one way, where M_total_P is a 2x2x901 matrix, where 901 is the number of frequencies you have in the code. clc clear ...

5 meses hace | 0

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I am getting this warning "Matrix is singular to working precision." and my surf plot is not showing.
You are doing a matrix mutiplication when you call the u() function, since you call u function with matrix arguments X and Y. Th...

5 meses hace | 1

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Gain dimension failure ending in error
G gain is set for element wise multiplication instead of matrix multiplication, hence (1,4).*(4,1) = (4,4). x = ones(4,1); G =...

5 meses hace | 0

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change the color of curve from blue to any color and make it bold
x= 0:0.01:2*pi; y = sin(x); plot(x,y,'r') % r stands for red look at the documentation for different colors

5 meses hace | 0

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Hi, why am I getting an error?
You provide a fitlm model to plot function and a color option. Remove the color option and try again. So change % plot(F_sept...

5 meses hace | 1

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Unrecognized function or variable 'del'.
Not recommended but you can generally overwrite native variable/function names. I cannot reproduce your problem n = 0; for del...

5 meses hace | 0

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How to make the encircled curve by blue.
You have one weird data and script to visualize but here is one way clear all warning off % you had references to F:/ folder ...

6 meses hace | 0

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How to vary angles at constant rate in a kinematics problem?
For loops are easy to understand but as mentioned in comments, once you understand the logic you should vectorize it. The basic ...

6 meses hace | 0

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how to get the name of current running m script
mfilename() function seems to be what you are looking for.

6 meses hace | 0

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Resuelto

Mysterious digits operation (easy)
What is this digit operation? 0 -> 0 1 -> 9 121 -> 9 44 -> 6 15 -> 5 1243 -> 7 ...

6 meses hace

Resuelto

Finding Perfect Squares
Given a vector of numbers, return true if one of the numbers is a square of one of the numbers. Otherwise return false. Example...

7 meses hace

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Return area of square
Side of square=input=a Area=output=b

7 meses hace

Resuelto

Maximum value in a matrix
Find the maximum value in the given matrix. For example, if A = [1 2 3; 4 7 8; 0 9 1]; then the answer is 9.

7 meses hace

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Class property validator reports an error if no default value is set
You can write your own validation function classdef MyClass properties hWriteFunc(1,1) {mustBeFunctionHandle} = @...

7 meses hace | 2

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contour diagram with three vectors
Here is one way: x = linspace(0,4,10); % x coordinate y = linspace(0,8,10); %^y coordinate [X,Y] = meshgrid(x,y); % meshgri...

7 meses hace | 0

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Reset value of Ramp block to be used in Matlab Fctn block
Seems like this was a homework problem :D Take a look here:

7 meses hace | 0

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Ramp block having reset option
Here is one way with enabled subsystem, where the subsystem comes up with an offset (so if the ramp number gets too large it mig...

7 meses hace | 0

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Constant estimation from 2 noisy measurements
@Viktor Cockx, A bit late but here is an example for a mass spring damper system, where I am trying to estimate the mass, spring...

7 meses hace | 0

Resuelto

Project Euler: Problem 1, Multiples of 3 and 5
If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23...

7 meses hace

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What does this section mean?
Probably the integral reset functionality. So when you disable and enable the controller, the integral term will reset to 0 to p...

7 meses hace | 3

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Creating a block for a term like (4s+1) in simulink?
I suggest you try to understand why 4*s+1 cannot be simulated. Although there are workarounds. hint: what does s do to a time do...

8 meses hace | 0

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Find a value using an index obtained from a different matrix with same dimensions
Something like this maybe: %% your matrices val = load('Total_matrix_cases.txt'); x = load('Total_matrix_rotations.txt'); ...

8 meses hace | 1

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