How to plot a matrix neglecting first two points?
plot(x(3:end), y(3:end))

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Min to Max in MatLab
v1 = sort(v1)

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Creating unknown-dimension array while executing
As you probably know, to create an array where you know the number of elements, you can use X = zeros(1,N); That's prefe...

How to load data from and .txt file?
To read a tab delimited ascii file while skipping the first row, try: data = dlmread('Spill.txt','\t',1,0);

How to do interpolation function to subtract 2 arrays
You have two sets of (x,y) coordinates that represent the beam paths. Now if they two sets shared the same x coordinates, findin...

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Please find the fault in the mentioned code

How to set period (t=0 becomes t=-4)
might depend on what and how you're plotting. For the simplest case you can just do this... t = 0:100; data = somefu...

App Designer's editor is slow and gets stuck alot
I recently started using App Designer myself. This is the first time it's been included with a normal installation, so yes,...

FIR Bandpass question about order and sampling rate
When designing your filter, the sampling rate should be set to the sampling rate that you took the data with, in your case 1000H...

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Start out with a signal 256 pixels long and interpolate this directly using the Fourier transform into a signal which has 1024 points
Not exactly sure what you're doing. But I think you should look up something called Nyquist Upsampling. The method is you ta...

having an issue in App Designer clearing plots
In the application I'm developing, and I'd like to make it so that the data that is plotted will be based on which checkboxes ar...