# Paul

Last seen: Today Active since 2011

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Question

Why Does numel() Accept More than One Argument?
@doc:numel indicates that the function accepts only a single argument. But it can be called with more than one argument and it r...

3 dagen ago | 1 answer | 1

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Force symbolic simplification to eliminate variable
Hi ludolfusexe, Try equationsToMatrix load ddddh_fun symvar(ddddh_fun) syms u % A*u = b [A,b] = equationsToMatrix(ddddh_fu...

3 dagen ago | 0

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Band-pass filter extraction.
Hi Claudio, Start with the original code Inertial_period = 20.215; K1_period = 24; % K1 period (hours) M2_period = 12; In...

4 dagen ago | 1

How to make variables assigned to SimulationInput object accessible to a PostSimFunction when using parsim
Hi Afzal, I think that the simOut from the simulation being called with sim is the argument sent into the PostSimFcn. Does the ...

5 dagen ago | 0

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Data type symfun (code problem)
Hi Patryk, Works o.k. here. What version of Matlab are you using? syms x f(x) = x^(3/5) * (4 - x)^(1/3); df(x) = diff(f(x));...

5 dagen ago | 0

UAV Toolbox - Reference Frame Definition
In reference to the example on the linked page, I assume the waypoints are specified in the waypoint trajectory reference frame....

6 dagen ago | 0

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Fourier Series,Spectral Analysys
Define the function over one period T0 = 1; % period f0 = 1/T0; syms t s(t) = rectangularPulse(.2,0.8,t); figure fplot(s(t...

7 dagen ago | 1

Add the line coder.extrinsic('readmatrix'); at the top of the Matlab Function after the %#codegen directive. Or, read in the ...

8 dagen ago | 0

Question

Why Does dcm2angle Work Like This?
Suppose I have a direction cosine matrix, brought to my attention by a colleague C = round(angle2dcm(-pi/2,-pi/2,0,'ZYX')) Ext...

8 dagen ago | 0 answers | 0

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Hi 승표, It's not really an offset. The Integrator block parmameter 'Initial Condition' is set to zero, which corresponds to sett...

8 dagen ago | 2

How can I get the energy of a wave?
Hi Li-Wun, This answer may be what's needed. If not, feel free to post back here with follow-up questions, preferably with exam...

9 dagen ago | 0

Obtaining a dataset from bandpass function
Hi Patrik, Is the output argument 'y' from bandpass the filtered time signal that is needed?

13 dagen ago | 0

Building symbolic expression with vars from vector
Hi ludolfusexe, It looks like the original code was attempting to use j as a index into an array, but symbolic variables are ne...

14 dagen ago | 1

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when i want to get magnitude of vector in command window told me that index exceeds matrix dimensions. although i write true code
Code works here v=[1 2 3 9 6] pp=v.^2 Rr=sum(pp) mag=sqrt(Rr) disp(mag) Check norm(v) Perhaps you have variable(s) named...

16 dagen ago | 0

Cross-correlation in frequency domain and xcorr2 in MATLAB
Hi Shy, Assuming that the output of the xcorr2 is the expected result, it can be obtained with the changes below img1 = imread...

16 dagen ago | 0

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how to solve this problem?
Hi Federico, According to the nlssest, the variable names in the input and output time tables have to macth the InputName and O...

16 dagen ago | 1

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Difficulty in Calculating Signal Frequency with an Offset
Hi Raphael, The first point in the FFT is always the sum of the elements of the input. When the signal includes the offset, the...

16 dagen ago | 0

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I am getting different values of fft for the same variable as demonstrated by a simple example below...
I think you were expecting ES be equal to the first column of EF. If desired for fftshift to work along a specific dimension of...

16 dagen ago | 0

Non-Negative Solution with Integrator in Simulink
Hi Rajmohan, Do the parameters Limit Output along with Upper and Lower Saturation Limit do what's needed? Integrator

20 dagen ago | 1

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Getting different outputs from indexing and graphically.How do I verify this indexing value?..
L=10; n=1.45; Omega=1.020663297455751e+11; GAMMAb=3.590391604102621e+08; c=2.9979e8; dt=6e-12; %time increment T=1...

21 dagen ago | 0

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I can't place the fft curve at the signal frequency exactly. There's been a slight deviation of the fft peak at that frequency
The code has fs = 80*fmax; but the TA vector is space by dt, so fs should be fs = 1/dt;

22 dagen ago | 0

Are polyshape vertices preserved reliably without floating point errors?
Hi Matt, The doc pages for intersect, union, subtract, and xor all show a second output (ShapeID) that indicates if a vertex i...

22 dagen ago | 1

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I can't place the fft curve at the signal frequency exactly. There's been a slight deviation of the fft peak at that frequency
fmax=1e9; %maximun frequency of the signal fs=60*fmax; ts=1/fs; %time increment T=10e-9; ...

23 dagen ago | 0

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﻿I get a robust controller result using musyn that is empty; "Krob = [ ]".
Hi Peter, My compliments on the quality of and effort put into this post! Based on only a quick inspection, I have the followi...

23 dagen ago | 0

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Why does my Transfer function overshoots
Define the plant zeros = roots([0.075, 1, 1]); poles = roots([1, 3, 5, 0]); Gs = zpk(zeros, poles,1); As was pointed out by ...

24 dagen ago | 1

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different color to plot
There may be fancy way to do it with a single line (or other type of) object, but it's easy to do it with two t = 0:.01:1; y =...

25 dagen ago | 0

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How to fix conjugated chirp signal frequency shift in spectrogram
Conjugation in the time domain corresponds to reversal and conjugation in the frequency domain. To get a basic idea of what's g...

25 dagen ago | 0

How to change frequency range doubling of Complex-valued Chirp Signal Spectrogram to match the Real-Valued Chirp Spectrogram
No, it appears there's no way to change that if you want to have spectrogram make the plot. Can use ylim to alter the plot afte...

25 dagen ago | 0

| accepted