Pregunta

Do Symbolic simplify() and expand() of Expressions Involving nchoosek() Make Sense?
Define a simple nCk expression syms k integer e = nchoosek(2,k) Evaluate at some values. Evaluation for k<0 and k>2 returns 0...

4 meses hace | 1 respuesta | 0

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Result of symbolic definite integral is clearly wrong
Hi Dan, Add assumptions on variables, might help with simplifications. syms t real syms d integer syms k integer cutoff(t) ...

4 meses hace | 1

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How to Control Simulink from Matlab during Simulation
Perhaps dashboard blocks would be helpful.

4 meses hace | 0

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Simulink parameters change during simulation from Matlab cmd line
To be clear, the intent is to change at the command line, while the simulation is running, base workspace variables that are blo...

4 meses hace | 0

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Pregunta

Why Can an Anonymous Function be Defined with a Non-Existent Parameter?
Define an anonymous function with one argument (x) and one parameter (y) f = @(x) x + y; I'm suprised that line sails through ...

4 meses hace | 1 respuesta | 1

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How to write a timetable to excel with rowtimes as dates without times?
"If there was a way in Matlab to change the format in the first column in the excel file from "m/d/yy hh:mm" to "d-mmm-yyyy", my...

4 meses hace | 0

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Matlab sorting numbers oddly
Hi Elijah, Would be helpful if you showed the code for reading the files. If I'm understanding correctly, maybe you could use ...

4 meses hace | 0

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Zero-Padding Position for FFT
Hi Jason, The data in x can't span exactly -0.5*T to 0.5*T if it has an even number of uniformly spaced samples. Assuming the ...

4 meses hace | 0

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How To Handled Fixed Point Datatype in Simulink if I am Not Having Fixed Point Designer Licence?
Hi Anup, If by "handle fixed Datatype" you mean that you have to work with a model that uses fixed-point functionality, check o...

4 meses hace | 0

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Shading area between 2 curves (x function in terms of y)
Here are the plots of the functions. The independent variable is y, which spans the x-axis on the fplot syms x y x1=y^2; x2=y...

4 meses hace | 0

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Indexing vectors with a zero and creating a "predicted" vector knowing what the diff should be
This solution is similar in spirit to that in this comment, which I think is the best approach based on how the problem has been...

4 meses hace | 0

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How can I plot 10 shifted single impulses in one plot (in a row)?
imp = @(x) sech(x); S0 = @(x) imp(x).*(x<=0); % assumes S0(0) = sech(0) ub = 10; x_imp = linspace(-ub, ub, 1001); x_S0 =...

4 meses hace | 1

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The sine wave comes out as flat as flat line .
The yellow line likely isn't flat, it just looks that way becuase the y-axis is scaled by 10^15. Try sending the that signal to ...

4 meses hace | 2

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Simulink Matlab Fcn, logical error for incrementation in Goertzel's algorithm
Hi bieron surya, Every time the function executes it hits the line count = single(0); which does exactly what it says, i.e., ...

4 meses hace | 0

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The coefficients of a Hermite polynomial
coeffs n = 4; H = hermiteH(n, sym('t')) [c,terms] = coeffs(H,sym('t')) or [c,terms] = coeffs(H,sym('t'),'all') Typically o...

5 meses hace | 2

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Load Pretrained Networks in Matlab function block
According to the doc pages coder.loadDeepLearningNetwork and predict- (not recommended) and the error message this function migh...

5 meses hace | 0

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Any commands about rotation where the unit of the input is radian
eul2rotm and angle2dcm both ingest angle inputs in radians, but they both require three angles on input. Also, care must be take...

5 meses hace | 0

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error in discrete space state depeding on coefficient
Hi SUENGTAE, In the first case we have: J = 0.01; b = 0.1; K = 0.01; R = 1; L = 0.5; A = [-b/J K/J -K/L -R/L]; ...

5 meses hace | 1

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unit delay in z-domain, is this correct? I do not think the bode is correct. Thanks
Hi Mohammad, What exactly about the Bode plot appears to be incorrect? The gain of the unit delay should be 1 (or 0 dB) at all...

5 meses hace | 0

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Why Doesn't "clear all" Clear the Assumptions from the Symbolic Engine?
Looks like this is fixed in whatever version of 2024b that Answers is running now as compared to the version it was running when...

5 meses hace | 0

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Linear Acceleration input to the IMU Block in Simulink
Hi Ubersich, You're not getting anything wrong, only suffering from poorly written documentation and a block algorithm that's p...

5 meses hace | 1

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From Matrix s-domain to state space and Z-domain
Hi JD, What does "Tc(s) constant value per some period suppied by 2D lookup table?" mean? If you have the R_ij and tau_ij for ...

5 meses hace | 0

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How to solve vector equation y = mx +c
% A*[m;n] = b A = [3.2790 1; 1.9704 1; 0.9757 1; 0.4835 1; 0.2425 1]; b = [661 401 201 101 51].'; See...

5 meses hace | 2

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Shows "vertcat error" in CIC
Hi Jay, That doc page does say that the filter can can accept either a vector or a matrix. But we have to look at how the data ...

5 meses hace | 0

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Why does c2d changes the structure of the C matrix in the ss representation?
Hi Elia, When working with transfer functions, the only thing that's considered is the input/output relationship. The Control S...

6 meses hace | 0

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Accessing variables from a Simulink model initFcn callback with parsim
Hi Guillermo, In my opinion, the documentation is very poor in explaining the interaction between workspaces, models, and model...

6 meses hace | 0

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Pregunta

Is the Ordering of the Output from combinations() Documented, Repeatable, and Sensible?
Suppose I want to evaluate a function of three variables over a grid of points in 3D space. For example, using three nested loo...

6 meses hace | 2 respuestas | 0

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I'm running signal processing simulations in Simulink. What's the proper way to set the solver step size?(I've attached my .slx file, tks!)
Hi ColdRabbit, As long as the Sample Time parameter of the ZOH block is set to the sampling period for which you want to comput...

6 meses hace | 0

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Different Results of allmargin() and margin()
Hi Florian, For a MIMO system, allmargin computes the margins of each loop with all other loops are closed. However, the comman...

6 meses hace | 0

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Cannot plot Fourier Transform
Hi David, I just came across this old post. syms t w h = sin(4*(t-1))./(pi*(t-1)); H = fourier(h, t, w); % Define Input and...

6 meses hace | 0