processing - Get the envelope of a signal in Matlab -

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i don't know how compute envelope of signal. i've seen mathwork solutions firstsolution secondsolution not work in signal i'm working with.

this signal provides pressure sensor , it's sampled @ frequency of 1khz , has 100000 samples.

i've read hilbert transform envelope doing abs(hilbert(data)) being data values of signal2.txt has not work. i've tried taking absolute value of analytic signal has not work either.

the solution i've tried find peaks , put them linearly not work because want continuous , derivable function result need derivate it.

i hope knew solution problem. :)


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