Performs linear (piecewise) interpolation at specified points.
Usage
interp_linear(x, y, xout)
Arguments
- x
Numeric vector of observed x-values (no duplicates).
- y
Numeric vector of observed y-values, same length as x.
- xout
Numeric vector of x-values where interpolation is desired.
Value
A tibble with columns x and y, containing the interpolated
values at xout. The attribute method is set to "linear".
Examples
x = c(1, 2, 3, 4, 5)
y = c(2, 4, 1, 5, 3)
interp_linear(x, y, xout = c(1.5, 2.5, 3.5))
#> # A tibble: 3 × 2
#> x y
#> <dbl> <dbl>
#> 1 1.5 3
#> 2 2.5 2.5
#> 3 3.5 3