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Discreete data and points.
Posted:
Jun 11, 2000 1:49 AM
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HI, I have the following problem:
I have set of discreete data at time steps t, t+dt,.... t+ndt as x(t),
x(t+dt),.... x(t+ndt). Now from this data I would like to find those times
ti's at which x(ti) goes to zero as accurately as possible. I mean the
times ti's as accurately as possible. note the data is random and
sinusodal behaviour is observed.
I can locate these times ti's by intepolating between two points which are
next to each other (i.e, one +ve one -ve) but that might not be the exact
time at which x(ti) = 0. Is there any numerical technique to do this in
any other possible way.
Thanks in advance.
Raj
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