[Scilab-users] Bessel cubic spline
tim at wescottdesign.com
tim at wescottdesign.com
Sun Feb 26 21:44:55 CET 2017
Have you looked at the help for the 'splin' function, to see if any of
the various flavors of spline that it will compute is what you want?
On 2017-02-26 03:49, fujimoto2005 wrote:
> Is there a function of Bessel cubic spline?
> I mean Besse cubic spline as follows.
> 1,pieacewise 3 degree polynomial on the each interval [x(i),x(i+1)] for
> i=1,2,..,n-1
> 2,f(x(i))=y(i) for 1=1,2,..,n
> 3,continuous at all xi for i=2,...,n-1
> 4,differnciable at all xi for i=2,...,n-1
> 5,f''(xi) for i=2,...,n-1 is same as the slope of a quadratic function
> which
> pass 3 points (x(i-1),y(i-1)) (x(i),y(i)),(x(i+1),y(i+1))
> 5,f''(x(1))is same as the slope of a quadratic function which pass 3
> points
> (x(1),y(1)) (x(2),y(2)),(x(3),y(3))
> 5,f''(x(n))is same as the slope of a quadratic function which pass 3
> points
> (x(n-2),y(n-2)) (x(n-1),y(n-1)),(x(n),y(n))
>
> Best regards
>
>
>
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