# 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**

Open and reformat data from txt file

hello seems to me there are multiple data sets (71) that are separated by lines having only two values (starting with "50" lik...

7 days ago | 0

Algorythm for Average of excel data

hello again well, this is quite the same as my answer to your other post Please share the algorithm of the particular data s...

8 days ago | 0

Converting entries from array to double from an entire column in a matrix for plotting

hello here you are D=readtable('tempDataTrollhFlygpl.xlsx', 'NumHeaderLines', 10) % anger 10 rubrikrader slik at jeg kan eks...

8 days ago | 1

How to add rows to a blank table, created by an excel import which only contains headers

hello why not this ? I simply used readcell to get the variable names from the excel file then populated the table (tehn you c...

8 days ago | 0

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How can I mirror a plot from a specific x axis.

maybe this ? x=[ 0.00630656 0.00615694 0.00602694 0.00593928 0.0058094 0.00566972 0.00552689 0.00523467 0.00493265 0...

8 days ago | 0

Editing csv data and convert it into a table

i know it's not the cleanest approach , but it works (at least) out = importdata('EnergyLIS.csv'); % cell array % now a bit ...

8 days ago | 2

How to extract data only along a path consisting of multiple longitude and latitude pair points using MATLAB

ok, this is just to expose the principle... still I need from you the correct lon, lat range for the EXTCOFF_model basically , ...

8 days ago | 0

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How is Spectrogram function working?

see my demo code below , which replicates the principle of spectrogram split the signal (with overlap) apply window fft ...

10 days ago | 0

Comparing 2 histograms in a barh-plot

hi seems to me the way you build your y data matters y = 5+[ 5 5;-5 -5]'; NO y = 5+[ -5 -5;5 5]'; YES x = [1 2]; y = 5+[ -...

10 days ago | 1

Multiple shaded spans on a time series plot dependent on a condition for separate time series data

hi see demo code below - hope it helps % dummy data x = 0:99; y = 1 + 0.02*sign(sin(1+x/25 + x.^2/250)) ; % y data y0 = 0...

11 days ago | 0

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Discrete Time Integrator does not integrate every time step

hello hmm, maybe your "blue" spikes are not all perfectly matching the 0.01 s time spacing and then your integrator see no in...

14 days ago | 0

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FFT doesn't give desired frequency response

hello there are different estimators used to compute a transfer function using just the ratio of two FFT is doable but does ...

14 days ago | 0

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Extract Numbers from Mixed string

hello i supposed you wanted to do this : B='single snap detector: 1 S2L:232867 S2R:3151621 S3L:0 S3R:0' % pat=regexpPattern...

14 days ago | 0

How to put linspace data into if statement

Suggestion : theta = linspace(0,2*pi,50); p = pressure(theta); figure; plot(theta, p); ylim([0 3]) function phase = pre...

14 days ago | 1

Plot 3d points in a map

hello not an user an neither an expert of geoplot and alike , but maybe this helps x = [47 50 55 61]; % lat y = [...

15 days ago | 0

Why is matlab printing all number of digit.

your y data have all same value so the plot y scale is zoomed with a huge factor, that's why you get so many decimals in the y ...

16 days ago | 0

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Plot time series of two set of data

hello I started this , but I am unsure about how the dates / time is coded in your data (as I discovered , HadGEM2 has to do w...

16 days ago | 0

Series Filter Loop Error

hello again so I wanted to learn a bit about gammatone filters , so I read this , which I suppose i also from where you starte...

16 days ago | 0

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How to get all values of for loop to make a graph?

@Minh Hoang Walter is right, this is the correct way to implement you idea also E equation must be inside the for loop and in...

16 days ago | 1

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Fill the graph with legend

hello patch or fill can be used for the job here an example with fill % dummy data x = 0:50; y = exp(-x/10) ; inter = 1;...

17 days ago | 0

I am trying to do bilinear curve fitting of capacity curve using FEMA-356 procedure. I am providing the data in excel format of the curve.

hello @Mark Cuanan and welcome back so this is it - still there could be some improvement in the code like putting the big po...

22 days ago | 0

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error size regarding contour plot

hello I believe this is what you wanted to do I don't see why you needed the reshape action unzip('Simulation.zip'); fi...

22 days ago | 0

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Why do I get "Array indices must be positive integers or logical values" when I am trying to plot my functions?

hello 1/ matlab is a language where indexing is 1 based and not zero based 2/ next correction is that y must be computed once...

23 days ago | 1

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Narrow band to third octave band conversion

hello I think I already answered a very similar question in the past anyhow , this is one liitle function I wrote long time ...

24 days ago | 0

Inquiry of file name as string format for Lua

hello you can do a horizontal concatenation of char or string using strcat Concaténer les chaînes de caractères horizontaleme...

24 days ago | 0

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Cycle by Cycle Average of switching signal in SIMULINK

hello I would suggest that any well designed low pass filter after the PWM signal should give you the original waveform here ...

28 days ago | 0

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MATLAB's boundary function does not return the boundaries of the polygon

with the Fex submission i mentionned above Boundary extraction (identification and tracing) from point cloud data - File Exchan...

28 days ago | 0

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How to make distubance like this?

looks like a square wave modulated by an decaying exponential envelope fine tune the parameters to your own needs : tau = 0.1...

28 days ago | 0

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rmoutliers and graph of the cleaned data

hello @Giuseppe Zumbo for the time being I have not used any fancy outlier removal technique , it's simply field engineer's bra...

29 days ago | 1

create image from timeseries data

hum , maybe it's because image processing is not my everyday activity but unless I have misunderstood the project you want to cr...

29 days ago | 1

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