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help with wavelet analysis - wcoherence plot
If understood your question correctly, follow this doc: https://www.mathworks.com/help/wavelet/ref/wcoherence.html#d126e131143 ...

約1年前 | 0

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How to move the Yaxis exponent outside
Here is one example how to get it done: % Sample data for plot display x = linspace(0, 2*pi, 100); y = 1e6 * sin(x); %% De...

約1年前 | 1

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how to find point from Table data in Simulink?
Do the followings: Feed the temperature and density values as inputs to the lookup table block The output of the lookup tab...

約1年前 | 1

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Ray tracing in antenna chamber
Have you checked out this documentation: https://www.mathworks.com/help/comm/ref/rfprop.raytracing.html?s_tid=answers_rc2-1_p4_...

約1年前 | 0

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Is this a logical Error in Matlab ? exp (pi*i*6) = 1.000000000000000 - 0.000000000000001i. WHY an i component ?, should just be 1
It is all about a display format: format short exp(pi*i*6) % compare with this: cos(6*pi)+1i*sin(6*pi) % Compare this: fo...

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Multiple loops to build structure?
It can be done somewhat what like this one: GN = {'Group 1:'; 'Group 2:'; 'Group 3:'}; NA = {'North'; 'East'; 'West']; for ...

約1年前 | 0

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How do I graphic
The given inequality does not have explicit solution. Therefore, by ignoring analytical constraints, these can be obtained: sym...

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Starting with the ramp signal r(t) and unit step signal u(t) given below, please write the codes to plot the following transformed versions (a-f):
t=-10:10; figure plot(t,t); grid on xlabel('Samples') ylabel('Amplitude') title('Ramp') figure t2=[zeros(1,100), on...

約1年前 | 0

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unable to connect blocks in Simulink
Use Simulink-PS converter block: https://www.mathworks.com/help/simscape/ref/simulinkpsconverter.html

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how to plot two m.file in one plot
use plot(x, y), e.g.: x = [-5:5;2*(-5:5); 3*(-5:5)]; y = [3*x.^2+3*x-3; -5*x.^2+5*x-15; -2*x.^2-3*x-13;]; plot(x(1,:),y(1,:),...

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Inverse FFT of a matrix
Just looking at your attached figure, it is clear along x axis is time. inverse FFT gives back time domain data from freq domain...

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Why can't I run my code? (tfest function)
Here it is running ok: x = readtable('data_thermal_pulse.txt'); time = x.Var1; T1 = x.Var2-x.Var2(1); input = x.Var4; Ts = ...

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Why does this function not work for decimals?
Here is the corrected answer (Note abs(x)<=1): % x = input("Please enter the value of x (in radians): "); % Here "input" prom...

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How to find an area below the curve follwed by x and y axis having two different parameters?
That would be something like this: DATA = [53 100; 26.5 88.5; 9.5 64.95; 4.75 46.85; 2.36 25.34; 0.85 23.14; 0.425 0;]; ...

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help understand the step size of the electrical engine dyno example
Click on Modeling Tab --> Model Explorer --> Base Workspace, and then you will see that the sampling time is 1E-5 in seconds. Se...

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How to randomly sample output times in Simbiology?
To randomly generate values using MEAN and STD values, normrnd() fcn can be used: MEAN_val = 15; % Mean in minutes STD_dev ...

約1年前 | 0

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How to get rid of Noise in Simulink?
There are a few blocks can be used. E.g., Discrete Filter (Transfer Function), Discrete FIR Filter, etc., whcih can be found: Si...

約1年前 | 0

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Matlab Plotting command problem
Even though you have not mentioned any error, there is a tiny point linked with hold on command. It needs to be followed at the ...

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How to ignore special characters and retrieve the data prior to the character
Here is one possible solution, to get the data correctly from the data file: % Open the data file for reading FID = fopen('tem...

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Solve equations of motion containing matrices and partial derivatives
Your posted code has a few critical issues to be addressed before executing it. (1) epsilon_rp is undefined; (2) y(1) =4.3; bu...

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Summing two signals should result in zero, but doesn't
Note that the matlab's PRECISION is not ABSOLUTE. See this example of Pythogorian theorem: a = -pi:pi/100:pi; F = 1 - (sin(a)....

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how to convert a 3D surface into a 2D contour?
Note that it is clear from the colorbar scale (Figure 2 in your question) that there must be another operation before obtaining ...

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Error in resampling function
If you want to use fs = 5000 Hz, then the command syntax has to be resample(x_siganl, time, fs_new) This is how it should be don...

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How to compute forces in global reference frame?
Presuming that you are also using some blocks from SimScape toolbox in the Simulink environment, here are some points to conside...

約1年前 | 0

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How do I change the current directory in Simulink Onramp?
Even if you are working online, you can still go for "Save As" option (upper left corner) to select the directory where to save ...

約1年前 | 1

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how to convert a 3D surface into a 2D contour?
This is how it can be done: H = openfig('ds2.fig'); % This is the extracted plot figure h = findobj(gca, 'Type', 'surfac...

約1年前 | 0

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Use of interp2 in an arbitrary dataset
Is this what you wanted to obtain: % Given DATA: Data = [ 0.25 0.25 0.5; 0.50 0.60 1.5; 0.75 0.75 3.0];...

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How to do bit-wise operations on symbolic variables that may be very long possibly larger than inter 64
Is this what you are trying to get: syms a b c n % Create symbols a = 12345; b = 9867; c = sym(0); n = 0; while a > ...

約1年前 | 1

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Plotting negative errorbar on semilogx
It looks like this is how to display the missing half of error bar values. The solution with the x- axis limit set up: D = read...

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Plotting negative errorbar on semilogx
This is how the nagtive values can be displayed in the plot: D = readtable('file.xlsx'); IDX1 = log10(D.density)>0; semilogx(...

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