Local Convexity-Preserving 𝐶² Rational Cubic Spline for Convex Data

Table 3

A convex data set.

𝑖	𝑥𝑖	𝑦𝑖
1	1.0	10.0
2	1.5	7.0
3	1.75	5.0
4	2.0	2.5
5	2.5	1.0
6	3.0	0.6
7	5.0	0.4
8	10.0	1.0
9	10.5	3.0
10	11	5.0
11	12	9.0