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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...

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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 ...

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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...

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Time Series Partitioning of EMG data
hello see example below : samples = 40000; buffer = 2000; data = rand(samples,1)+10*((1:samples)/samples)'; % noisy ramp...

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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...

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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...

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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...

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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) -...

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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 ...

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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...

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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;...

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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...

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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...

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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...

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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 ...

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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...

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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...

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How do I create array of a function with for loop?
hello it's not the best coding practice, but it works ... clc clearvars % dummy data X1 = rand([424,412]); X2 = rand([4...

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How to plot power of wavelet transform.
hello again I simply run your code using the appropriate package the package and results are in the zip attached # Cross...

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how to receive power values in and out the cone of influence in wavelet transform.
hello I assume this is related to your previous post How to plot power of wavelet transform. - MATLAB Answers - MATLAB Centr...

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The graphs of position, velocity and acceleration are wrong.
hello I didn't find any mistake in your original equations , but I am lazy and I found your code quite long and complicated......

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Saving multiple plots into one folder with the specified figure name in code to jpg form
hello why not simply add this line of code after each figure : adjust the resolution to your needs (here 140 DPI) print('-dj...

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Attempting to detrend and remove noise from surface roughness data
hello my prefered function for smoothing data is smoothdata , but there are other options example below : clc close all ...

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Generating some sounds and present all of the sound randomly to left and right ear
hello again we need to clarify a bit the data you generate (see my comment above) , but basically this is your code a bit modif...

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How to turn a code into a function while one of the input is string
hello Reza see my suggestion below A is now a cell array I added a structure param to easily pass the various coefficients ...

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I'm trying to use loop function and want to cut my code short, and my end goal is to compare idle components from 7 idle machines, from an excel data, I'm not sure how to do
hello as far as I understand your request , this is a modified code (see below) i splitted a main section and a subfunction s...

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Index exceeding number of array elements on second iteration of loop
hello your variables are not indexed , so this is no surprise that it will fail at the second iteration code should be , ass...

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Extracting specific data from multiple excel files and create a single matrix from those
hello this is one example if you want to work out the entire folder I assumed it would be numeric data so I used importdata (...

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plotting noise spectrum of the data
hello Nirala this is my go to fft analysis code for signals it does fft with averaging and spectrograms you can modify the ...

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how to get Y Value from a plot having 3 curves or more as shown in figure?
hello you can try this code clc clearvars % dummy data n=100; x=(0:n-1)/n; y1 = 3*sin(1.5*x)+ 0.01*randn(1,n); y2 =...

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