Re: Extremums of a curve: how to determine?

On 4 May 2005 13:03:36 -0700, "Albert" <albrg@xxxxxxxxxxxxx> wrote:

>Hi all,
>
>I'm not a mathematician, so please forgive me for probably awkward
>description of what I need.
>
>I have a curve, say a diagram of price of some stock. I need to
>determine the price channel of that stock: i.e. I need to build two
>straight lines through the last two "lows" and "highs" of the price
>diagram. My question is: how do I determine the coordinates of those
>last two maximums and two minimums on the curve for a given period of
>time?
>
>Thanks in advance,
>Albert.

You are looking at discrete data here, right? You don't have a curve
to work with, and even if you did you wouldn't likely have a formula
for the curve. It seems to me you just want to write a little program
that looks at the data points and picks the last two min's and max's
according to whatever criteria you use to determine such points. By
that, I mean I suppose there is some subjective notion that you use so
that you don't call some little tiny blip on its gradual way up the
last "high". I am also guessing that quantifying that subjective
notion is the hard part.

--Lynn
.

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