Answered
varagin with original var names
inputname can be used to return the name of the variable in the calling workspace as a character vector, at least for simple cal...

2 years ago | 1

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Question

Is Matlab consistently and correctly handling symbolic expressions that include a dirac function applied at a point of discontinuity?
Is Matlab consistently and correctly handling symbolic expressions that include a dirac function applied at a point of discontin...

2 years ago | 1 answer | 0

1

answer

Answered
Matlab's numeric solution to det of Matrix is incorrect
Hi ThanosST, Are you sure the expressions in B are entered correctly? Asking because it sure looks like L = 3.9407 is the solu...

2 years ago | 0

Answered
Cauchy integral theorem vs. integral formula
Hi Luqman, The numerical integration is using a step size that is proably too large to capture the rapid variation in the integ...

2 years ago | 1

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Answered
Integral and inverse integral
The attachment convolution.jpg is confusing. Equation (15) defines Pf(x) as a convolution. But the unnumbered equation in the ri...

2 years ago | 1

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Answered
Euler's identity with angle in degrees
If the input is given in degrees, consider writing your own function using cosd and sind for accurate results at the 90 deg inte...

2 years ago | 1

Answered
MATLAB code to SIMULINK block ?
One way to get started may be to wrap the ultrasonic sensor code in a function, and call that function from a Simulink MatlabFun...

2 years ago | 0

Answered
Convolution of function on a non symmetric axis using 'conv'
Hi MMG1 It looks like the code is using the convolution sum to approximate a convolution integral. Is that correct? If so, my c...

2 years ago | 1

Answered
How to Convert a 3D Matrix into Cell Array of Desire Dimension
A = rand(2,100,500); % example data C = squeeze(num2cell(A,[1 2])); % create cell array whos C isequal(cat(3,C{:}),A) % veri...

2 years ago | 1

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Answered
Matlab giving error for tall array assignment
The code doesn't define a variable named grid. It's getting confused with the function grid

2 years ago | 1

Answered
How to calculate a double integral with a subfunction?
Hi Dewen Yu, As the error message indicated, the function pattern_element needs to use element-wise math operations to compute ...

2 years ago | 2

Answered
polar motion seems to be reversely applied to the function "ecef2eci."
Hi Jeongin Yun, Quoting from the question, with emphasis added: "In order to transformate coordinate eci to ecef, it should ro...

2 years ago | 0

Answered
Insert number in structure array
Hi Chad, If possible, consider changing the structure of your data to arrays that can be indexed, instead of field names that c...

2 years ago | 0

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Answered
how to set a lowpass filter in simulink?
Hi moh mor, The error message from the Lowpass Filter block sounds bit misleading. If you look on the doc page, it says that t...

2 years ago | 1

Answered
cannot use `lsim()` function properly
Hi 嘉伟, Here is the plant model M = 1.5; m = 0.5; l = 10; g = 9.8; %% state space A = [0 1 0 0; 0 0 m*g/M 0; 0 0 0 1; 0 0 ...

2 years ago | 0

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Answered
Fourier transform of circular convolution is not equal to multiplication of two Fourier transforms?
Hi Khiem, Consider the following to see the difference between circular and linear convolution. N = 32; ...

2 years ago | 1

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Answered
How to do error approximation of a weibull fit in matlab
The Weibull distribution is that of a continuous random variable. Are you trying to compare its fitted pdf with the plot returne...

2 years ago | 0

Answered
I wonder why the following code is not able to give a valid output? My objective is to solve a system of simultaneous ODEs with dirac comb func.
Hi Mridupawan, It would be helpful if you posted the error that you're getting or otherwise show exactly what the problem is. ...

2 years ago | 0

Answered
Problem with Kalman Filter and state space model
Hi Tobias, It looks like the state space model is defined in continuous time, but the Kalman filter is a discrete-time implemen...

2 years ago | 1

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Answered
How to calculate real probability of data
"is there a way I can get the probability values in a matrix of the same dimenions as A." The number of bins in the histogram w...

2 years ago | 0

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Answered
Changing initial conditions of a Simulink model when simulating using a for loop
I think you can do what you want using Model Operating points. Here's a doc page to get started. Why do you want to do this: in...

2 years ago | 1

Answered
programmatically collect sim errors
Using the sim command, simulation warnings are captured in the SimulationMetaData.ExecutionInfo of the output of the sim command...

3 years ago | 0

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Answered
imufilter results seem incorrect
I think the gyro data is in deg/sec, but the imufilter wants that input in rad/sec. Check those units. data = readtable('data.c...

3 years ago | 0

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Answered
I'm getting weird units while double-integrating accelerometer data to extract displacement
Hi @Nathaniel, I only see one issue with the code, but I have some other thoughts for consideration. Read in the data warning...

3 years ago | 0

Answered
Decreasing digits of answer
Try: vpa(grad,6)

3 years ago | 1

Answered
freqz() not behaving as expected?
The b and a inputs to freqz are the coefficients in ascending powers of z^-1. So this case b = 1; a = [1 0 0 0]; really means...

3 years ago | 1

Answered
include all rows matrix in []
One way .... Create example data Sis.a = 1; Sis = repmat(Sis,73,1); z = rand(5668,73); The code [Sis.z] = cell2struct(num2...

3 years ago | 2

Answered
DTFT possible on Matlab?
Computing the DTFT of a signal in Matlab depends on a) if the signal is finite duration or infinite duration b) do we want the...

3 years ago | 2

Answered
How to verify the discrete-time convolution theorem with Matlab
Hi moyu, Linear convolution in the frequency domain using fft requires zero padding the sequences before taking the FFTs and mu...

3 years ago | 1

Answered
sum filed in struct
% example data Sis.PV = 20; % Sis.PV = repmat(Sis.PV,1,82); % original incorrect line, expanded the field instead of the struc...

3 years ago | 2

| accepted