Mathieu NOE
Hutchinson
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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Answer 10 questions that were unanswered for more than 30 days
Awarded to Mathieu NOE on 08 Jul 2021
Contribute at least one answer each month for 6 consecutive months
Awarded to Mathieu NOE on 02 Apr 2021
Accept 1 answer given by other contributors
Awarded to Mathieu NOE on 18 Mar 2021
100 of your answers have been accepted
Awarded to Mathieu NOE on 17 Dec 2020
Provide your first answer ever to someone else's question
Awarded to Mathieu NOE on 09 Jun 2020
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Awarded to Mathieu NOE on 01 May 2020
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Content Feed
Merging multiple file excel
hello Rachele you can do this - I used natsortfile (from FEX : https://fr.mathworks.com/matlabcentral/fileexchange/47434-natu...
20 minuti ago | 0
Fitting gaussian curve on my data with same under curve area and start and end points
hello check this code (below) plot code clc clearvars load Data_X.mat load Data_Y.mat x = Data_X; y = Data_Y; ...
circa un'ora ago | 0
How to load data with segments
hello I copied / pasted your data in a txt file try this : %% read one file clc clearvars filename = 'mydata.txt'; da...
circa 2 ore ago | 0
Interpolate/Resample to a specific decimal point
hello try this : x=[1 3 4 7 6 3 6]; out = my_resample(x) %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% function out = my_resam...
circa 3 ore ago | 0
Making a text file including variables
hello look at the attached files . I probably found that on FEX, but it seems to have disappeared
circa 4 ore ago | 0
How to move line plot to be above a stacked bar chart?
hello this would be my 2 cents suggestion using ylim : code : indexValues = [repelem(6, 33), repelem(5,6), repelem(4,6),...
1 giorno ago | 0
Index in position 2 exceeds array bounds (must not exceed 2)
hello just fixed minor issues on following two lines %%%SHOW ITERATION INFORMATION disp(['Iteration : ' num2str(it...
1 giorno ago | 0
How to change the color of my plots
hello I modified a bit your code to get this result : .code : close all clear all avalues=0.3:0.005:1; N=200; d=0.03...
1 giorno ago | 0
How to generate a sequence of acoustic levels (dB) of a particular frequency (let say 50 Hz) of an acoustic signal?
hello seems your looking for a tool doing spectral analysis check this : clc clearvars %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%...
4 giorni ago | 0
I have created a function that relies on a guess, and now I need to create a for loop for that function that plugs in the answer it gives back in to the "OLD" original guess.
hello yes , your "recursion" is not really working this works Once you're satisfied with the code , you can reùove / comme...
5 giorni ago | 0
How to choose stopband ripple and passband ripple of filter for High pass filter
hello why not start with simpler filters like butterworth or bessel filters ? . If you don't have any specific requirement ...
5 giorni ago | 1
| accepted
How can I handle the signal of the data read from the serial port
hello if you are able to store the data in a file (txt or mat or ..) you can adapt this code I developped for audio processing...
5 giorni ago | 1
How to add low frequency noise to the signal?
hello this is a simple demo showing a sine signal corrupted by a low frequency noise . You can adjust the parameters to your o...
5 giorni ago | 0
| accepted
Reading multiple non-sequential *.txt files containing both text and numbers
hello this is an example that shows how I could read one then multiple text files (and applying a natural name sorting) you ...
6 giorni ago | 0
| accepted
pulse train with gaussian pulses in an irregular interval
hello a quick and dirty demo , not using gauspuls but that could be easily done also clc clearvars f0 = 50; % pulse freq...
6 giorni ago | 0
| accepted
Time Series Partitioning of EMG data
hello see example below : samples = 40000; buffer = 2000; data = rand(samples,1)+10*((1:samples)/samples)'; % noisy ramp...
6 giorni ago | 0
how can I know the sence of voice that was recorded in a special place?
hello I interpret your request about how to analyse your records - assuming you can use audioread from matlab , here 's a cod...
6 giorni ago | 0
How to save multiple output?
hello I would recommend to use structures (indexed) like in this example a =randperm(18); b=reshape(a,9,2); vals=b; [m,n...
6 giorni ago | 1
| accepted
use regexp to extract index
hello my 2 cents suggestion using readlines and working on strings : this simple code can be expanded / modified according t...
8 giorni ago | 1
| accepted
How to update title of plot without it "wiggling"
hello my 2 cents suggestion : plot(rand(1,10),rand(1,10)) t = repmat([0 10],1,5); for k = 1:length(t) above10= t(k) -...
11 giorni ago | 0
Determine less than in for loop
hello does that reflect what you wanted to do ? clc clearvars % x = round(100*rand(1,10)); x = [11 96 0 77 ...
11 giorni ago | 0
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read a .txt file
hello have you tried to work with tables - using readtable ? filename = '0-3000.txt'; T = readtable(filename); C = table2c...
11 giorni ago | 0
| accepted
Error while plotting the surface
hello you need to create a grid from the 1D array x and y . This is done via meshgrid code : clc clearvars x = 0:1:100;...
12 giorni ago | 0
for loop stack the data
hello my suggestion if M is (like here) a 1D array so the col saved is always one; this can be removed from the code if ne...
12 giorni ago | 0
| accepted
How to set level values of a variable in a nc file
hello again3 so I tried to a few things to get the min and max points of the data and display them (the big crosses) I am stil...
12 giorni ago | 1
| accepted
How to add correlation factor to the plot?
hello see my little example below (your code does not show how you get the linear model fit data) clc clearvars % dummy...
12 giorni ago | 0
| accepted
read special cell in excel file
hello again so here a small code to extract the lines where the 2 numbers in row 2 and row 3 are below a given threshold. FYI ...
13 giorni ago | 0
| accepted
Finding end of words in signal
hello you should first compute the envelope of your signal (for example using the function of same name envelope) simply do a...
13 giorni ago | 1
| accepted
How to adapt a function to a change of two points?
hello Daniel this is my suggestion - a simple anamorphosis of the curve along the vertical axis (= a vertical shift and a multi...
13 giorni ago | 0
| accepted
