[Scilab-users] To find maximum value in a random curve

[jasper van baten]

You could determine the coefficients of a cubic spline, then determine 
analytically the extrema and inflection points on the cubic equation 
that defines each interval (there where the roots of the parabolic that 
is the first order derivative of the cubic are within the interval).

See here for setting up the spline: 
http://en.wikipedia.org/wiki/Spline_interpolation

Best wishes,

Jasper.



On 2/19/2014 11:31, bomber1978 [via Scilab / Xcos - Mailing Lists 
Archives] wrote:
> Hi all,
>
> I have a random 2D-curve which is defined by a set of points (I don't 
> know the equation of the curve), obtained by interpolation.
> How can I find the maximum, minimum, & inflexion points on this curve.
>
> Thank you very much!
>
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