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Mathieu NOE


Last seen: Today Active since 2015

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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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Answered
Change order of Area and Constantline in the same plot
hello xi was missing so I created a dummy one maybe not the smartest solution, but it does the job : %% Parameters xi = li...

3 dagar ago | 1

Answered
How to improve spectrogram plot?
I played a bit with some parameters and changed from imagesc to surf (pcolor would also work) to allow for optionnal frequency d...

3 dagar ago | 0

Answered
Settling time functionality - definition of duration
I could suggest this simple code to answer your last question the first plot shows where the data is within 2% tolerance band ...

3 dagar ago | 0

Answered
Selecting which prominence to use with findpeaks
hello again @Henry I am 100% sure to have fully understood all the maths you want to do on your data but I have some suggestion...

4 dagar ago | 0

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Answered
Data extraction for figure
@Viswajit Talluru with Grabit GRABIT - File Exchange - MATLAB Central it was fairly easy to scan seperatly your 3 curves -...

4 dagar ago | 0

| accepted

Answered
Change colour on grid
hello Andrew one solution is to overlay two mesh plots and ask for the second to have a single bright color (here red) eithe...

5 dagar ago | 1

| accepted

Answered
Simulink Repeating Sequence giving unexpected Results
hello this is probably due to your choice of solver - what are your options ? I opted for a fixed (discrete) sampling with sa...

5 dagar ago | 0

Answered
Spatial Frequency (FFT) estimation from image intensity profiles
hello and welcome back let's try it with fft (have a doubt you will get a more accurate result though) the results are in ac...

6 dagar ago | 0

| accepted

Answered
Improve STFT Plot Clarity
hello @Abo and welcome back ! fist idea with STFT is to maximize the overlap , but anyway the STFT has not the best performan...

6 dagar ago | 1

| accepted

Answered
Fringe spacing and frequency from image
hello this is maybe a bit oversimplified but I assumed that I would not make a big error by considering that the fringes are p...

10 dagar ago | 2

| accepted

Answered
Comment afficher une valeur en fraction?
Bonjour @KINGANGA voici une possibilité : % Given decimal number decimalNumber = 0.33333333333; % Find the closest intege...

11 dagar ago | 0

Answered
How do I find the corner points of an mask
hello let's try with detectHarrisFeatures : not really super efficient I admit , I will propose alternatives ... im = imrea...

13 dagar ago | 0

| accepted

Answered
Problems encountered when using sph2cart
hello I could not find any quiver issue (tried to reproduce it my way) , but at the end I suspected maybe you need to invert t...

13 dagar ago | 0

Answered
How to specify the color of each face independently? Either using plot3 or waterfall plot
let's try something %Data x = [3 4 5 6 7 8]; y = 1:10; z = [0.557668282000000 0.338441078000000 0.234647830000000 0.1715715...

13 dagar ago | 1

| accepted

Answered
how to print a table with hearders all aligned to the center of each column
see attached a nice formatting piece of code for this job example code : data = 1e2.*rand(5,4); fmt = {'%.3g'}; col_header...

14 dagar ago | 0

Answered
How to shift lines to their correction positions (I need to correct figure)
so finally and hopefully I found somehow a path to the solution first problem was to find the best position and slopes for the...

17 dagar ago | 0

| accepted

Answered
Bivariate colorscale for color plot
hello maybe this ? I simply assumed for the demo that f and g would be describing a circle in a 2D space the second plot is...

17 dagar ago | 1

Answered
Writing a loop to compute Indices
hello see basic demo below select which option you want overlap = 0*buffer_size; % overlap expressed in samples (a. For th...

21 dagar ago | 0

Answered
Spider Plot with Standard Deviation as shaded region
hello again I just created a quick and dirty slightly modified function (sorry for messing it ! ) , so I could suggest this - ...

24 dagar ago | 1

| accepted

Answered
SDOF time history analysis
if you need a code to perform some spectral analysis and integration (to get velocity and displacement) you can try this : ...

25 dagar ago | 0

Answered
Correct way to calculate the dominant frequency of time series signal?
hello I was happy at the beginning to share this code , but your signal is so short (in terms of how many cycles are in the wh...

26 dagar ago | 0

Answered
how to plot all zeros on xaxis?
hello this could be one solution, but it's very basic (for the moment) as all x points are displayed with the same spacing , w...

27 dagar ago | 0

| accepted

Answered
How to get the values of x axis only visible at the bottom subplots?
hello maybe this ? (all credits to this answer , adapted to your question : Plot - Remove axis ticks but keep grid lines - MA...

27 dagar ago | 0

Answered
Help with code to fit a BlackBody to data to find temperature
hello seems to me this was a minor issue in the way you code BB, do not use at the same time T as an array and a variable in t...

27 dagar ago | 1

| accepted

Answered
An update about my Code
hello Danny that looks quite similar to another answer of mine : Read values from fvtool graph - MATLAB Answers - MATLAB Cen...

27 dagar ago | 0

Answered
How to use pwm with lqr controller?
hello again I am not sure what it brings here to convert your linear outputs to pwm , but a simple demo below if you want to t...

28 dagar ago | 0

Answered
How can I replicate this plot using the supplied equations?
hello do you mean the last plot ? here a simple code that replicate it : (there is still a bit of work if you want all the...

ungefär en månad ago | 0

Answered
Enter multiple values for a single variable
hello and welcome back after all this time In my eyes you are not solving an equation you just computing the numerical output ...

ungefär en månad ago | 0

| accepted

Answered
Data must be a single matrix Y or a list of pairs X,Y
hello maybe this ? I prefer to avoid using i and j as loop indexes as those letters usually are reserved as the iamginary un...

ungefär en månad ago | 0

Answered
Overfitting of computational model in experimental data
hello fminsearch can be quite sensitive to IC, so even a slightly sub optimal IC value can lead to lack of performance / robus...

ungefär en månad ago | 0

| accepted

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