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display multiple 3D figures with plot3
Save each loaded file to a cell array instead. Try something like this — a = randi(9, 10, 3); writematrix(a,'Test1.txt'); ...

3 years ago | 0

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Answered
Build a State Space model from identified Modal Parameters
That may be possible using the Signal Processing Toolbox invfreqz and tf2ss functions. I put the idfrd and ssest calls at the e...

3 years ago | 0

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How to access data of an iddata object in a cell array?
The iddata object is a structure, so in this instance, use cell array indexing and structure referencing to get its contents — ...

3 years ago | 0

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How can I find the order of normalized Chebyshev Type I high-pass filter ?
I use the cheb1ord function for such problems. There are equivalent functions for other filter designs. It was introduced be...

3 years ago | 0

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Create a Notch filter with low and high pass filters
Use the bandstop function, specifying 'ImpulseResponse','iir' for best results.

3 years ago | 1

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Answered
vpasolve gives me only 1 x-value of intersection
An analytic approach is an option, however it will be necessary first to estimate the approximate zero-crossings in any event. ...

3 years ago | 2

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How to parameterize function.
Try something like this — syms t x y z P{1} = x^2 +2*y +3*z; P{2} = x*y -2*z^2; P = subs(P,{x,y,z},{t,t,t}) See the docu...

3 years ago | 1

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Answered
How to match cell arrays according to their sample ID?
Try something like this — %% Create sample data A= {'Sample ID', 'Value'; 1, 1050; 2,1133; 3,1001; 4,1200}; B= {'Sample ID',...

3 years ago | 1

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Answered
Resampling matrices in a loop using interp2
I am not certain what hte problem is, since the error messagd is not part of the provided information. I suspect the problem ...

3 years ago | 1

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Answered
overwrite figure(2) on figure(1)
I am not certain what you are asking. Consider using the hold function to plot two figures on the same axes — syms x f = si...

3 years ago | 1

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retime Linear or next
Try something like this — Time = datetime('now')+hours(0:2).'; Temperature = 10*randn(size(Time)); T2 = table(Time,Temperatu...

3 years ago | 0

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I have a raw eeg data and i want to plot the alpha wave(8-12Hz) of this data in the same window . How can i do? please help me
Design a bandpass filter (using bandpass or other appropriate function), filter the signal, and plot it — Fs = 1000; L = 1E+...

3 years ago | 1

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Answered
Why do I get "Array indices must be positive integers or logical values" error when using "angle" function?
You have a variable named ‘angle’ somewhere in your workspace. If you run: which angle -all the results should be similar to...

3 years ago | 0

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Finding similar elements in a single matrix
One approach using accumarray — x = [2 0 0 3 3 0 4 4 0 5 5 5 6 6 6]; [Aunique,~,idx] = unique(x(:))...

3 years ago | 0

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Answered
How to Stop FOR loop when "answer" is reached, and display answer?
See the documentation on the break function.

3 years ago | 0

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Excel column informtion input
I would use readtable to read the file, then addvars to add one or more variables in the desired position, then writetable to wr...

3 years ago | 0

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Genetic Algorithm not returning best found solution
I do not entirely understand what your ‘obj_fun’ fitness function optimises, however expecting ga to optimise 37 parameters in 2...

3 years ago | 0

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Answered
how to read .txt file having the following format.
Use the readcell function — C1 = readcell('https://www.mathworks.com/matlabcentral/answers/uploaded_files/1214888/example.txt'...

3 years ago | 0

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how to save anovan figure as a .fig?
It is likely not possible to save the image, however anovan creates a table with the same information if you request it, and it ...

3 years ago | 0

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Answered
how to plot 3D figure like this?
Try something like this — Fs = 250; L = 100; f = 1.26; t = linspace(0, L-1, L)/Fs; s = sin([0 (1:2:20)].'*2*pi*t*f)./[1 (1...

3 years ago | 0

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Answered
Representing samples on analog signal according to the sample period (MATLAB)
The easiest way to create the time vector is: t = linspace(0, L-1, L)/Fe; Example — LD = load('handel.mat'); y = LD.y; F...

3 years ago | 0

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Plot Day of Year with Time
Try something like this — T1 = readtable('https://www.mathworks.com/matlabcentral/answers/uploaded_files/1213723/Data_2.csv') ...

3 years ago | 1

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defining state matrix as anonymous function
Referring to your other post: ode45 is running an infinite loop (it isn’t actually, since switching from ode45 to ode15s solves ...

3 years ago | 0

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How to make a line of fixed length?
It is relatively straightforward to write an anonymous function for this — createLine = @(startpt, slope, len) [startpt(1) sta...

3 years ago | 0

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How to find and fit the objective function for a damped oscillation?
Using fminsearch — T1 = readtable('https://www.mathworks.com/matlabcentral/answers/uploaded_files/1211598/F300.xlsx') x = T1....

3 years ago | 1

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Getting "Arrays have incompatible sizes for this operation." on this exercise
The ‘z’ assignment fails because the arrays used to calculate it are empty, likely because the first 50 elements of ‘n’ are less...

3 years ago | 0

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Unrecognized function or variable 'wgs2utm'
Search the File Exchange for wgs2utm.

3 years ago | 0

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Can I find likelihood function of an objective function?
If you have the Statistics and Machine Learning Toolbox, see if the mle function (and associated functions) will do what you wan...

3 years ago | 1

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How to make contour plot of two matrices in MATLAB?
‘Data files both are matrices with 1 row and 55 columns, which represent 55 points.’ They are vectors by definition, and it i...

3 years ago | 1

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Answered
Broad confidence bound range when fitting in Matlab
The important thing to note here is that the confidence intervals for ‘n’, ‘L’ and ‘A’ include zero (have opposite signs) and ...

3 years ago | 1