Question

What is the Image Processing Toolbox Convention for Input to freqz2() ?
I was trying to learn how to use the function freqz2 in the Image Processing Toolbox. That doc page says that the FIR filter inp...

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Combined Discrete-Continuous Simulation In SIMULINK
Hi Sajjad, It sounds like you want to use the feature of the Integrator block for Resetting the State. At every t_i, you can re...

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Calculating Power of Specific Spatial Frequencies of pictures
Hi Olivia, The equations for u and v are correct if rows and cols are both even. Otherwise, they'd have to be adjusted. Regard...

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choose B or C or D if A does not exist - how to write this?
Create an example structure data.THDA = 1;data.THPP = 2;data.THDP = 3; Use fieldnames to get the fields of data fnames = fiel...

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How to save an output from Simulink into MatLab during different iteration ?
Hi Ronan, Based on the description, there are probably several options, but hard to say specifically becasue we don't know exac...

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Bivariate normal value standardization
Hi CJ, In short, the area of integration for the X1 case is no longer a rectangle as is assumed by mvncdf Define the original ...

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How do I solve this error in Parameter Setting for 2-D Lookup Table Block in Simulink?
% Create a surrogate model for vehicle longitudinal dynamics % Set model name modelName = 'VehicleLongitudinalSurrogate'; % C...

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Application of multistage decimator filter to signal
As shown at designMultistageDecimator, this function retruns a dsp.FilterCascade object M = 48; Fin = 30.72e6*M; Astop = 90; ...

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Simulink Model to transfer function via simulink and Matlab
Hi Yuval, What is the setting for the c parameter in the Derivative blocks? If it's the default (inf), those blocks will linea...

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In Simulink, why do two unrelated modules affect each other?
Even if A and B are not connected, changes in B can causes changes in output of A because those changes in B can affect the step...

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Create Variable in Simulink block that contains 63 elements.
Hi David, Question is a bit unclear. As shown, it appears the model has 63 separate Sine Wave blocks. That means each time th...

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Shiftet values of omega in bode plot as result from generating idfrd() and tfest()
If fre is in Hz, then this line frerad = fre.*(pi/180); should be freqrad = fre*2*pi; to convert to rad/sec

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Name a dataset that will be used in Simulink
Hi David, The 'unnamed' in that block is the name of the signal, not the dataset. f0 = 60; % Fundamental frequency in Hz samp...

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Poisson CDF output is all one value
Hi Michael, The Poisson Distribution is a distribution of a discrete random variable that takes on only integer values >= 0. Fo...

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Struct array with differently sized fields as parameter data for Simulink simulation
Hi Friedrich, Using 2022a (so there might be some updates in this area if using a later version), the Matlab Fucntion block can...

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Can you create an object in Simulink that can be referenced by multiple MATLAB Fcn blocks?
Hi Roop, If you want to use global data inside Matlab Function blocks, start from Use Global Data in MATLAB Function Blocks to ...

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Is there a way to log variables from a Matlab Function Block (in Simulink), that is not output?
Here's one option based on the idea of @Aquatris to specify the local variables that you want to log from the Matlab Function as...

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how to import parameters (weights and bias) in simulink
Hi Ahmad, To bring fc1, fc2, fc3 and fc4 into the Malab function block as constant parameters, start from Configure MATLAB Fun...

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Using logicals in arrayfun
rng(100) tempA = rand(10,18); tempB = 1:10; u = arrayfun(@(x,y) x{1}(1:y), num2cell(tempA,2), tempB.', 'UniformOutput', fals...

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Question

How does Symbolic diff() Operate When the Order of Derivative is Symbolic?
Simple symbolic function syms n integer positive syms x real f(x) = x^n First, second, and sixth (just to check) derivatives...

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How to continually clock in data during a simulation within Simulink
Hi Dan, It appears that the output of the Bit to Integer Conversion block is a scalar, which can be checked by going to Debug -...

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Why such a fuss with ndgrid and meshgrid issues?
Hi Kristoffer, The inputs to griddata that can be in either meshgrid or ndgrid format are the query points in Xq and Yq. I thin...

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How to add a time delay to a diagonal ss from a reside pole function?
Hi Joan, The problem appears to be with how bodeplot is unwrapping the phase. Here is the original code % Delay problem Ak =...

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how to label the variance decomposition table
Check the doc page collintest and review how to use the VarNames input. Or, instead of pulling all the variables out from data,...

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PID controller, difference when graphing step function with PID control block in matlab and simulink
Hi hoang, The posted code doesn't result in the same figure as in the question s =tf('s'); g = 1.883e5/(s*(s^2+4466*s+6.43e6)...

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how to calculate singular values in collin test to detect multicollinearity
Hi NAFISA, Using the example from the the doc collintest load Data_Canada Output from collintest [sValues,condInx] = collint...

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FFT multiple input waves and plot on same graph
%% Input Signal fs = 20e3; numFilts = 32; % filter_number = numFilts; freq1 = 1000; % Hz Nperiods = 15; % we need more th...

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How does nufft function work in matlab?
To get fft and nufft to yield the same results .... tmax = 12; n = 2^11; tau = 1; % Width of the gaussian pulse ...

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Temporarily Change Signal Line Names in Simulink
Hi Dhruv, At the risk of asking an obvious question, does the workflow require that the model be saved after modifying the gene...

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Why do these methods to obtain the simulink model transfer functions return different results?
Hi BW, Define PI and F s = zpk('s'); PI = 1 + 2/s; F = 6; In the first case, the linerarizer computes the transfer functio...

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