Evaluate a kernel function at point u

Evaluate a kernel function at point u

Usage

kernel_eval(u, kernel_type = KERNEL_GAUSSIAN)

Arguments

u

Numeric evaluation point (scaled by bandwidth).

kernel_type

Integer code or kernel name. One of KERNEL_GAUSSIAN (0), KERNEL_EPANECHNIKOV (1), KERNEL_UNIFORM (2), KERNEL_TRIANGULAR (3), KERNEL_BIWEIGHT (4), or the matching string.

Value

Kernel density value K(u).

Examples

kernel_eval(0, "gaussian")
#> [1] 0.3989423
kernel_eval(c(-1, 0, 1, 2), KERNEL_EPANECHNIKOV)
#> [1] 0.00 0.75 0.00 0.00