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Mathieu NOE


Hutchinson

Last seen: Today Attivo dal 2015

Followers: 5   Following: 0

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Engineer - mechanices /ekectronics / signal processing Average matlab user for 20 years now. Professional Interests: signal processing, adaptive control, noise and vibration processing

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Risposto
How do I stitch these data and get a final plot
hello maybe this ? clear all S=readmatrix ('Probe.txt'); T=S(:,[2,3]); i=0; for j=0:60:300 R=[cos(j) -s...

1 giorno fa | 0

Risposto
How to use the attached excel file below to do a Fourier conversion and display the spectrogram?
hello you can use my "do it all" demo file below your signal has been detrended and downsampled . But I wonder what you can ...

2 giorni fa | 1

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Risposto
Converting acceleration data to displacement data using FFT results in Zero-drift
FYI, a very simple time domain approach - assuming we don't care about the DC values , only the dynamic portion of the data is o...

2 giorni fa | 0

Risposto
I Just Want To Read Text From URL And Save It As Txt.... But How?
hello try this textweb = webread("https://kp.gfz-potsdam.de/kpdata?startdate=2024-05-21&enddate=2024-05-26&format=kp1#kpdata...

2 giorni fa | 2

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Risposto
To plot one stem with multiple values for data of different months.
hello @Amjad Iqbal I modified a bit your code added one line in the first for loop number_of_data_thismonth(k) = numel(...

7 giorni fa | 0

Risposto
Find specific points of increase within multiple different data sets
hello try this... hope it helps - though I did not draw vertical lines but you have to start and ending points coordinates. I...

7 giorni fa | 0

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Risposto
Need help for Influence line plotting
hello I believe there is no mistake in the code simply you have a fairly crude spatial resolution (fixed to 0.5 m in the cod...

8 giorni fa | 0

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Risposto
is my code logically correct? will i get the same output when i do it manually?
hello I wondered if the exercise was more to prove that decimating then resampling (by the same factor) would give (almost) th...

8 giorni fa | 0

Risposto
First Order Ogden Stress Strain Plot
hello I believe parentheses are missing for the last term % Stress calculation for compression stress_comp = (mu1/alpha1) *...

12 giorni fa | 0

Risposto
Mean shift clustering - issue with finding the center of my clusters
Now probably my best contribution so far , and I post it here with maybe the hope that you will find it interesting enough to ac...

13 giorni fa | 1

Risposto
how to count a sequence of data arrays with cut off?
hello why not simply this ? % example 1 cnr_all=[2.33 2.00 1.60 1.59 1.99]; cut_off=1.50; [~,N] = min(cnr_all - cut_o...

13 giorni fa | 1

Risposto
graph multiple excel or csv files
hello try this if you have lot of excel files and you want to be sure they are sorted correctly (what the regular dir does ...

14 giorni fa | 0

Risposto
Find minimum values based on unique number
hello the provided mat file contains 492 different profiles (and not 147) my suggestion so far : load('matlab.mat') pr...

14 giorni fa | 0

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Risposto
Translate and rotate a curve
hello Mads like this ? load('pqfile.MAT') % remove NaN and correct for size mismatch A(isnan(A)) = []; F(isnan(F)) = []...

15 giorni fa | 0

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Risposto
Subtractive Baseline-correction
hello I was first a bit puzzled when you mention the baseline is made of the first 10 samples - but after several readings it ...

15 giorni fa | 0

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Risposto
how to delete nan values from array columns without losing data from other columns
ok, so this is now the main dishes.... have first tried this code on the first data file , will adapt to your new files as soo...

15 giorni fa | 0

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Risposto
Mean shift clustering - issue with finding the center of my clusters
hello Marco seems that your issue is simply because the function works for row oriented data see those lines in MeanShiftClus...

16 giorni fa | 1

Risposto
autocorrelation plot without the grid of lines
hello you can remove the grid by specifying grid off after the plot Mdl = arima(AR={0.75,0.15},SAR={0.9,-0.5,0.5}, ... ...

16 giorni fa | 0

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Risposto
how to make distance affect on attenuation factor?
hello again try this corrected code : [inwave,fs]=audioread("anechoic_voice.wav"); %LOW-PASS FILTER% % Define filter spe...

16 giorni fa | 0

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Risposto
Help creating RMS Window
hello here some demo code FYI % dummy data n = 1000; Fs = 100; dt = 1/Fs; t=(0:n-1)*dt; y = max(0.707,abs(cos(t))+0.1*ra...

16 giorni fa | 0

Risposto
How can I remove inverted repeat pairs of strings from a table?
hello Paul this would be my suggestion attached your data simply pasted in a text file hope it helps clc out = readcell(...

23 giorni fa | 0

Risposto
How to remove unwanted region in a graph
hello see filloutliers , it was made for you Detect and replace outliers in data - MATLAB filloutliers - MathWorks France I...

26 giorni fa | 0

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Risposto
Findings the parameters from the time series
hello here you are there is still a doubt in my mind for the third (last ) iteration for R3 according to your excel file th...

27 giorni fa | 0

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Risposto
Find data from txt file
Simply using the suggested methods , you can access your DT data this way I simply created two data files from you post I u...

29 giorni fa | 0

Risposto
How to seperate a superimposed sinusoidal wave from a signal
hello try the code provided below I found that the sinus signal frequency is probably around 0.5 and not 1 Hz therefore I u...

29 giorni fa | 1

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Risposto
Signal Analyzer Lowpass filter overshoots input signal
hello again so here you can see your signals (in time and frequency domain) before and after low pass filtering (I used here fi...

29 giorni fa | 0

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Risposto
Trying to ubderstand the power distribution in fft plot
hello the total power of the fft spectrum equals ~100W pow_spectrum_total = 99.9502 but your fft spectrum spread it on mul...

29 giorni fa | 0

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Risposto
How to plot isosurface of for a wide range of values
as @Paul suggested, we can define several levels and display them on the same plot just having some fun with colors and transp...

30 giorni fa | 0

Risposto
Plateau followed by one phase decay
hello a code based on the poor's man optimizer (fminsearch) no special toolbox required % data x = 0:0.5:20; y = [-0.137...

30 giorni fa | 0

Risposto
Converting a three-column set of data to xyf matrix suitable for a contour plot
hello see example below, the x,y,z are dummy data - use your own data instead % create somme dummy data z = peaks(20); ...

30 giorni fa | 0

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