Shape Preserving Interpolation Using Rational Cubic Spline

Figure 1

Interpolating curve for data in Table 1. (a) Default cubic spline with and . (b) rational cubic spline with and . (c) rational cubic spline by using derivative calculated from tridiagonal equation (7) with and . (d) The graphs of (b)   rational cubic spline (blue) and (c) rational cubic spline (red).

(a)

(b)

(c)

(d)