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**Feeds**

Sinewave with log frequency - Shows the wrong frequency content

hello you have to compute the angle increment vs time then take the sine of that angle (or, in other words, do the integral of...

2 giorni fa | 0

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improve fit compared to R

hello I interpreted your question as how to fit a U shaped function to your data , so at the end I opted for a parabola , is t...

27 giorni fa | 0

Sampling time of matlab figure data

hello to retrieve data from a figure , you can do it by two ways : for recent releases : openfig('data points.fig'); set(...

circa un mese fa | 0

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Interpolate pairs of values from matrix

hello you can surely get the required x , y data for a given z value ; use contour for that purpose as shown in code example b...

circa un mese fa | 0

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how to extract (x) coordinates and (y) coordinates of the top boundary from bwimage

hello this is a solution that does not even require the Image processing toolbox of course I had to do a bit of gym to conver...

circa un mese fa | 0

Trouble in reading .tdms file

hello No toolbox required here - I simply used this Fex submission (files are attached if you prefer the fast way) ConvertTD...

circa un mese fa | 0

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Plot Fourier Transform (FFT) Interpolation Model into future

hello Giacomo first I corrected some minor bugs (before we dig into more technical stuff) A is an amplitude so you should t...

circa un mese fa | 0

Colormap generated using the information of different arrays

hello Richard again you were pretty close to the solution , but to actually make the transparency work you should replace this...

circa un mese fa | 1

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comment savoir si un dossier est vide

hello The dir structure will return only the two directories entries '.' and '..'. So, check length(d)==2, if that is the cas...

circa un mese fa | 0

Moving window percentile computation using Conv

hello maybe this ? NB it does not need conv but requires Statistics and Machine Learning Toolbox % dummy data t= 0:0.25:100;...

circa 2 mesi fa | 0

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Why does the signal become thicker after noise reduction and the dots on both sides diverge?

hello again you can already get decent results with smoothdata , other smoothing techniques based on splines or NN could also ...

circa 2 mesi fa | 0

extracting overlapping portions of 2 similar tracks

hello you could do something like this ... I have manually checked which track is the longest and the code works here because ...

circa 2 mesi fa | 0

Matlab code to find the Wave height

hello again I am by no means an image processing expert, but sometimes I go outside my comfort zone ... hopefully my suggestion...

circa 2 mesi fa | 0

how to separate the real and imaginary parts inside a cell

Maybe this ? % create dummy data n = 32; for k = 1:2 cellarray{k} = k*ones(n,n)*(1+1i*5); end % process it for ...

circa 2 mesi fa | 0

Change format of field contour labels that have been manually added in a tiled layout

why not create explicitely the levels (V array) ? a = 0.98; b = 1.02; Z = peaks(99)/100 + (a+b)/2 ; XY = [-0.375:.125:.37...

circa 2 mesi fa | 0

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How to find center and radius of an arc from binarized image

hello this is what I can offer you today you will need the attached function (CircleFitByTaubin.m) , and this Fex submissio...

circa 2 mesi fa | 0

How do i show the "delta" difference between the two plotted curves?

hello you need to "realign" your two data sets vs common x vector - in other words we need to creat a new x vector and inter...

circa 2 mesi fa | 0

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Extraction of the spatial coordinates of a curve and calculation of the normal line to each of its points

hello tried a few things here As far as I have understood correctly your question, the points you are looking for are given ...

2 mesi fa | 1

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Put to white the plot space outside a geometric shape

hello have you checked that the colorbar is symetric around zero (to have white color correspind to zero exactly ? ) this re...

2 mesi fa | 1

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Error: unrecognized function or variable "bi2de"

Thanks to this post it was easy to (re)create the missing / unknown bi2de function (see end of the code) : Most efficient way to...

2 mesi fa | 0

comment afficher une image à un endroit spécifié d'un axe ?

hello Daniel you need to freeze your axes , otherwise you will not get the desired results here I simply used "hold on" after...

2 mesi fa | 0

Converting cell array with <missing> elements to numerical or double matrix

hello if you want to stick with readcell, you could do that : clc InputData=readcell('MATLAB_readcell.xlsx',"Sheet","Sample...

3 mesi fa | 0

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Is there a way to crop an array depending on the values that I want through a function as the values change?

hello try this : a = [0 0 0 0 1 1 1 1 1 0 0 0 1 0 0 0 0 1 1 1 1 1 0 1 1 1 1]; ind = logical(a); [begin,ends] = find_st...

4 mesi fa | 0

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Slicing arrays and save it in the file

hello with your input data in attachment, try this code : % load data data = readmatrix('data.txt'); % or readtable if yo...

4 mesi fa | 1

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Script has no errors, but no plot is given

again... let's fix it I cannot check here if e^(r(i)^2) (probably wrong) must be replaced by exp(r(i)^2) - I let you double ...

4 mesi fa | 0

Use of eig(A) for eigenvectors

hello let's fix it 1/ had to remove the trailing end - there's simply no reason to have an "end" at the end of your code - p...

4 mesi fa | 0

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The blank before var >0.5 cause error in R2016a

I don't think it has to do with a specific release I have the same result with R2020a now either you put no space or at least...

4 mesi fa | 1

Remove harmonics background noise

I have some doubts we can recover a clean sinewave from that ... nevertheless I tried a few things ... first I decimated the sig...

4 mesi fa | 0

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Hi I have Csv file for voltage and time data and I would like to compute spectrogram to to compute harmonics at different frequencies but my spectrogram looks so much noisy or

hello you may play with the colormap and also with the displayed dB range to focus on your signal tones and not the background...

4 mesi fa | 0

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Plotting path of rods on a circular disk along a surface to deduce rack gear profile.

ok, I had some fun today with your exercise ... time to grind a bit the sharp edges though ! % a disk fitted with 4 rods d = ...

4 mesi fa | 1

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