# 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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**Content Feed**

Plot only the surfaces within a bounding surface?

hello seems to me there is no need for a for loop to compute ymin & ymax also ymin = - ymax , so we can avoid creating yet a...

ungefär 5 timmar ago | 0

How to smooth a curve to the lower bound in Matlab

hello smoothn was done for you ! use the 'robust' option to get rid of the outliers smoothn - File Exchange - MATLAB Central...

ungefär 21 timmar ago | 0

Percentage change in y as a result of 10% reduction in x?

hello try this data file is attached I used this robust smoother : smoothn - File Exchange - MATLAB Central (mathworks.co...

en dag ago | 0

application of fft analyzer

hello there are multiple aspects in vibration / dynamic system analysis : response signal analysis either in time or frequen...

en dag ago | 0

| accepted

Creating the discrete-time graph of a recorded audio signal

hello no panic ! if you have records in wav format , you only need audioread to get your data getaudiodata is not needed h...

6 dagar ago | 0

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Wishing to remove invalid noisy data from a graph.

My first idea would be to analyse the ratio of variance vs mean value of a buffer of samples (repeat if until the end of the dat...

7 dagar ago | 0

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How to interplote and meshgrid 2D scatter plot (bounded by an ir-regular surface)?

hello this should help you move forward side by side the original plot and once resampled (grid data) % Step 1: Plott...

9 dagar ago | 0

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code to read BUFKIT formatted model data

hello this can be a simple wrapper to get your data D=readlines('data.txt'); % read as string array ixP1=find(contains(...

9 dagar ago | 0

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3D Histogram from raw data

hello see example below - this is equivalent to hist3 % dummy data (col vectors) x = rand(100,1); y = rand(100,1); z = ra...

14 dagar ago | 0

how do i change barwidth of 2 bars simaltaneously

hello I don't think there is a problem with bar simply when you choose a wider bar one can get hidden behind the front bar ...

14 dagar ago | 0

Text on point in a 2D plot

hello you can use text for that job xp = 1:0.5:2*pi+1; yp = 0.1*xp+sin(xp); c = rand(size(xp)); scatter(xp,yp,100,c,'fill...

14 dagar ago | 0

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How to make output X Y graph like the picture?

hello you simply have to remember that vertical lines need you to duplicate the x value (with different y values of course) ...

14 dagar ago | 0

"Unfurl" 3D surface to 2D plane (not projection)

hello after a few trials , this is it ! try this : data = readmatrix('Test1.xlsx',"NumHeaderLines",1); % x y z v x = da...

15 dagar ago | 0

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How do I get smooth edges for a contourf plot on a log-log scale scatterplot?

hello I can suggest this , although I consider it needs some refinements MFR_1 = [0.93016, 0.13933, 0.04154; 4.75072, 0.96454...

16 dagar ago | 0

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A smoother surfplot, maybe with pchip interpolation

hello I used this excellent FEX submission to get this result : smoothn - File Exchange - MATLAB Central (mathworks.com) ...

16 dagar ago | 0

How can I align a sequence of three data points?

hello try this data_A = [0 4 5 7 8 9]; data_B = [4 5 7 8 1 5 6]; data_C = [ 2 5 3 4 5 7 8]; % check that all interse...

19 dagar ago | 1

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Compute RMS value over 1-second intervals

hello I am not aware of a matlab function called movrms (but there is a movmean and movsum) here a code that does the same th...

20 dagar ago | 0

How can I compare reference curve with other curves ?

you could use the correlation coeffiient between two data set (used in curve fitting for example) %%%%%%%%%%%%%%%%%%%%%%%%%%%...

20 dagar ago | 0

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readtable disfigures the CSV file header

hello here you are : headerRow = {'ID'} {'par_1 (mol)'} {'par_2 (meter^3)'} {'par_3 (kg/L)'} data = readtable('he...

20 dagar ago | 1

MinPeakProminence error in findpeaks - detecting unwanted signal

hello again this would be my suggestion hope it helps load ('Data.mat'); [PKS,LOCS,W,P] = findpeaks(y, 'MinPeakProminenc...

20 dagar ago | 1

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How do I plot the average curve from hundreds of vehicle speed curves and further show only the average curve?

hello try this as every vehicule will have a different range of x data (pos) , you need to first interpolate the data before...

22 dagar ago | 0

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I want to extract all cell data inside

hello maybe this ? result : out = 1×9 cell array {'o'} {'w'} {'t'} {'p'} {'n'} {'r'} {'b'} {'q'...

26 dagar ago | 0

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I have 5 arrays (A,B,C,D,E) of size(20x1). 20 Rows represents 20 models. I want to rank best model based on minimise (A,B), maximise (C,D,E). Any hint will be helpful.

maybe this ? AB= rand(20,2); CDE=rand(20,3); ABinv = 1./AB; % minimum(A,B) replaced by maximum of it's inverse ABinvCD...

27 dagar ago | 0

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How to get specific tick axis values equally spaced, independently of their values?

hello 1/ seems to me you simply mixed x and ylabels 2/ you may want the Y dir to be put back in "normal" mode result obtain...

27 dagar ago | 0

I have a set of data that I need to separate into unequal intervals in order to calculate the RMS value of these data (The data points are continuous over time)

hello maybe this ? I know I reinvented the histogram ( :)) , in few lines... % Torque post processing data = readmatrix("...

27 dagar ago | 1

How to find month wise mean and std from data of many years

hello try this T = readtable('data.csv'); data = table2array(T(:,2:end)); dates = T(:,1); month_mean = mean(data,2); mon...

27 dagar ago | 0

Averaging different initial conditions over 10 years

nothing fancy here , but it does the job.... % create some dummy data ic = 160; years = 10; data = rand(365,ic*years); % ...

28 dagar ago | 0

'Index exceeds array dimensions. Index value 0 exceeds valid range [1-12] for array 'A'.' I get this error when I run the code? Can you please help?

hello I replaced nansum which is outdatted by sum with omitnan parameter seems to work, at least for the input data I picked ...

28 dagar ago | 0

Hello, I want to limit the number of coordinates generated by the method bwboundaries or boundary while having the same step size.

hello again I could reduce the amount of data by a factor 3 roughly , more could be done if the large "straigth" lines d...

28 dagar ago | 0

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Remove outliers until there are none left

hello I updated the end of your code the plot is for myself to see the difffences before / after thresholding (if hot spots ...

28 dagar ago | 0

| accepted