Resampling scattered data with MATLAB's $\tt interp$ and $\tt resample$

1. How to do resampling in matlab?
2. What is resampling in signal processing?
3. Is resampling the same as interpolation?

How to do resampling in matlab?

y = resample( x , p , q ) resamples the input sequence, x , at p / q times the original sample rate. resample applies an FIR Antialiasing Lowpass Filter to x and compensates for the delay introduced by the filter. The function operates along the first array dimension with size greater than 1.

What is resampling in signal processing?

Rational resampling is the process of converting the sampling frequency of a signal to another sampling frequency that differs from the original frequency by a rational factor of L/M, where both L and M are integer values. Rational resampling also is known as fractional resampling.

Is resampling the same as interpolation?

Resampling is used to either increase the sample rate (make the image larger) or decrease it (make the image smaller). Interpolation is the process of calculating values between sample points. So, if you resample an image you can use interpolation to do it.