Local Convexity-Preserving 𝐶² Rational Cubic Spline for Convex Data

Table 1

2D convex data set.

𝑖	1	2	3	4	5	6	7
𝑥𝑖	−12	−10	−5	0	5	10	12
𝑦𝑖	4	2	0.5	0.25	0.5	2	4