NASA NTRS · 19900061981
Monotone and convex quadratic spline interpolation
Abstract
A method for producing interpolants that preserve the monotonicity and convexity of discrete data is described. It utilizes the quadratic spline proposed by Schumaker (1983) which was subsequently characterized by De Vore and Yan (1986). The selection of first order derivatives at the given data points is essential to this spline. An observation made by De Vore and Yan is generalized, and an improved method to select these derivatives is proposed. The resulting spline is completely local, efficient, and simple to implement.
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Lam, Maria H.. 1990-01-01. Monotone and convex quadratic spline interpolation. https://ntrs.nasa.gov/citations/19900061981
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