Answered
Fourier Analysis on a Damped Harmonic Oscillator
hello I improved a bit the firts section of your code but I don't get what you are trying to do wit the second portion of the...

4 years ago | 0

Answered
Why is my projectile motion code only working at certain input angles.
hello made a for loop on angles to test the code (for one given V velocity) and it worked as soon as I put the "clear x y" li...

4 years ago | 1

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Transform rows to columns and add them at the end
hi simply this : >> a = [1 2 3 ; 4 5 6; 7 8 9]; >> a(:) ans = 1 4 7 2 5 8 ...

4 years ago | 0

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Answered
Colorbar with equal ticks between two power exponentials
hi try this figure xt = linspace(0,log10(3e10),7); col = colorbar('XTickLabel', {'0', '0.5 x 10^{10}', '1 x 10^{10}', '1.5 ...

4 years ago | 0

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Answered
merge three barh (stacked)
hello Rachele try this ! you get now one figure (plot) per variable , 20 in total) all the best t = readcell('Cartel2.x...

4 years ago | 1

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Plot cell data from for loop
hello maybe this ? I replaced the " mean(vertcat(y{:,r,m,ind}),1) " by a simple random number clc clearvars outLoop...

4 years ago | 0

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Answered
How to generate random broadband vibration signal for certain frequency range ?
hello here you are my friend ! Fs = 500; % sampling rate duration = 10; % seconds rms_amplitude = 0.4; samples = Fs*du...

4 years ago | 0

Answered
Area under a peak
hello based on @Davide Masiello excellent proposition, I tried to make the selection of the peak zone a bit more automatic... ...

4 years ago | 2

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Sawtooth that has 2 different times
hello here is the correct answer : T = 25e-3; % signal duration = 25 ms amplitude = 0.4; fs = 10000; % ts = 0.1 ms t = ...

4 years ago | 0

Answered
find the minmum value in each column of a matrix
hello try this : d=[ 0 10.1164 0 0 0; 11.4474 0 0 ...

4 years ago | 0

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Cannot perform FFT on a signal imported from Simulink
hello again the issue was that the signal start with a NaN value removing this first sample would solve all your issue. maybe...

4 years ago | 0

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Automatic Signal denoising and segmenting for feature extraction
hello this is a code to implement a 4th order bandpass filter (and plot the fft spectrum of the signal before and after filter...

4 years ago | 0

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Answered
find multiples of real number in sampled array
hello I had some code laying around and found it could be used for your purpose (the sine wave problem , and btw i could not r...

4 years ago | 1

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Adding additional column into the array
hello simply this Anew = [A B(:,5)];

4 years ago | 0

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How to arrange the correct range in colorbar in MATLAB
hello as I don't have the toolbox for fit, I used instead the FEX submission (excellent) from John D'Errico : polyfitn - Fil...

4 years ago | 0

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Answered
Plotting SPL(dBA) from an audio WAV file?
hello Zhu no problem, I'll try to answer as precisely as possible the amplitude is negative because the dB scale is the log of...

4 years ago | 3

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Answered
How do I iterate through a line while skipping a set number of values from the beginning of the line?
hello maybe this code could be of some help (to extract snipsets of data based on threshold comparison with running rms value ...

4 years ago | 0

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Smooth vector data with a specific step
hello not sure what you are trying to do , but if it's about splitting data in buffers and doing some math on the buffers (mea...

4 years ago | 0

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How should I import dataset separately from a long text file?
hello the demo txt files has two tables so this is how the code generates the labels and data (as cell arrays) label = 1×...

4 years ago | 0

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Answered
calculating the x1 and x2 of a peak automatically for every data ?
hello tweaked and completed your code so that the Q factor is now automatically computed x1 is flow in my code, x2 is fhigh ...

4 years ago | 0

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Answered
using acceleration record, Get velocity and displacement signal & carry out FFT and plot the spectra
hello see my suggestion below clc clearvars data = readmatrix('GEE Earthquake.xlsx'); t = data(:,1); dt = mean(diff(t)); ...

4 years ago | 0

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Answered
Flatten plot from two vectors
hello a small demo to compare smoothing and spline fitting (using this FEX submission : SPLINEFIT - File Exchange - MATLAB Ce...

4 years ago | 0

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Matlab: While loop use end values
hello try my little demo below clc clearvars nsamples=10; for k = 1:nsamples % constants init (my guess / ...

4 years ago | 0

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How to do simultaneous flickering of two straight line plots
hello Marissa try this code all the best clc clearvars clf figure(1) a=plot([6;9],[0.4;0.4],'linewidth',8,'color','green...

4 years ago | 0

Answered
Loop over subfolders in directory instead of using 'cd' and perform calcuations and give output for every subfolder
hello this is my suggestion - you may have to adapt it to your specific needs clc clearvars %% define path yourpath = pwd...

4 years ago | 1

Answered
How can I use the array of data into a formula to calculate and get the data.
hello some dots where missing here (read again the doc about dot product) Vout=f*Ip*((4*pi*Np*Ns*u0*b*x)./(3*m*log(r))).*(1-((...

4 years ago | 0

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How to filter a signal when I know the max and min frequencies of the signal.
hello try this Nb : for my demo only 10 first channels processed and displayed all the best clc clearvars %%%%%%%%%%...

4 years ago | 1

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Answered
Putting NULLs in between the string array.
hello here you are A={'a','b','c','d','e'}; index=[1,3,5]; %% main code ll = numel(A)+numel(index); index_comp = (1:ll)...

4 years ago | 1

Answered
sine waveform with frequency and samples
%%Time specifications: f = 100; % signal frequency sps = 15; % samples per signal period Fs = sps*f; % samples per se...

4 years ago | 0

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Answered
How to plot a smooth curve for Empirical probability density ?
hello tried a few options , smoothdata and spline fit. In fact, I was thinking you wanted something super smooth so I first o...

4 years ago | 1

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