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From: Nicholas Kinar on 18 Feb 2010 01:04
Hello---

I am wondering if there is a way in Matlab to find the turning points of
a curve using discretely-sampled data. I've applied the Savitzky-Golay
smoothing filter to determine the first and second derivatives. Is
there a way to search for "zeros," or alternately where "zeros" can be
approximated?

Nicholas
From: TideMan on 18 Feb 2010 01:50
On Feb 18, 7:04 pm, Nicholas Kinar <n.ki...(a)usask.ca> wrote:
> Hello---
>
> I am wondering if there is a way in Matlab to find the turning points of
> a curve using discretely-sampled data.  I've applied the Savitzky-Golay
> smoothing filter to determine the first and second derivatives.  Is
> there a way to search for "zeros," or alternately where "zeros" can be
> approximated?
>
> Nicholas

help fzero
From: Nicholas Kinar on 18 Feb 2010 09:21

> help fzero

Good stuff, thanks TideMan! I remember a similar set of algorithms in
Fortran some years ago, and it is interesting to know that Matlab has
something like this built in.
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