Find the roots of a cubic B-spline.
Given the knots (>=8) and coefficients of a cubic B-spline return the roots of the spline.
Parameters : | tck – A length 3 sequence describing the given spline (See splev). :
mest – An estimate of the number of zeros (Default is 10) : |
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Returns : | zeros – An array giving the roots of the spline. : |
See also
splprep, splrep, splint, spalde, splev, bisplrep, bisplev, UnivariateSpline, BivariateSpline
References
[R10] | C. de Boor, “On calculating with b-splines”, J. Approximation Theory, 6, p.50-62, 1972. |
[R11] | M.G. Cox, “The numerical evaluation of b-splines”, J. Inst. Maths Applics, 10, p.134-149, 1972. |
[R12] | P. Dierckx, “Curve and surface fitting with splines”, Monographs on Numerical Analysis, Oxford University Press, 1993. |