Shape-preserving (monotone) piecewise cubic Hermite interpolation using
the Fritsch-Carlson method via splinefun(method = "monoH.FC").
Usage
interp_hermite(x, y, xout)
Arguments
- x
Numeric vector of observed x-values (no duplicates, length >= 2).
- y
Numeric vector of observed y-values.
- xout
Numeric vector of x-values where interpolation is desired.
Value
A tibble with columns x and y. The attribute method is set
to "hermite".
Examples
x = c(1, 2, 3, 4, 5)
y = c(1, 2, 4, 7, 11)
interp_hermite(x, y, xout = c(1.5, 2.5, 3.5))
#> # A tibble: 3 × 2
#> x y
#> <dbl> <dbl>
#> 1 1.5 1.44
#> 2 2.5 2.88
#> 3 3.5 5.38