How do I make a low-pass filter on this data set?

Hey, just trying to get some tips on how to put a low pass filter on this data set. I was a given a data of time(x) and ECG data(y) and this creates a graph with a lot going on so trying to condense it. Has anybody had experience in implementing a low pass filter on these types of data. Your tips would be appreciated. :)

Answer 1

[Chunru]

Consider the following function which has a Low pass filter build in:

[Y,Ty] = resample(X,Tx,Fs) uses interpolation and an anti-aliasing

filter to resample the signal at a uniform sample rate, Fs, expressed

in hertz (Hz).