How can I increase my dataset length by Interpolation?
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I want to increase my data set length from say 5571x1 to 5590x1 by interpolating it non linearly since this dataset is experimental and there is no fixed interval.
All i've experimented with is using 'interp' and 'interp1' but no luck so far.
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Ameer Hamza
le 5 Mai 2020
This is a simple example which interpolates the data using cubic interpolation
x = rand(5571, 1); % your signal
t = linspace(0, 1, numel(x));
n = 5590; % required length
t_ = linspace(0, 1, n);
x_ = interp1(t, x, t_, 'spline').'; % x_ has dimensions of 5590x1
2 commentaires
Ameer Hamza
le 5 Mai 2020
You can try 'linear', 'pchip', or 'makima' in place of spline and see which fits your requirement.
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