Skip to contents

Spline interpolation for a single vector

Source: R/mocap-gaps.R
fillGapsSpline.Rd

Fills NA values in a numeric vector using smooth spline interpolation via smooth.spline.

Usage

fillGapsSpline(x, spar = NULL)

Arguments

x

Numeric vector potentially containing NAs

spar

Smoothing parameter passed to smooth.spline. If NULL (default), the smoothing parameter is chosen automatically.

Value

Numeric vector with NAs filled by spline interpolation. Leading and trailing NAs (outside the range of valid data) remain as NA.

References

Federolf PA (2013). "A novel approach to solve the 'missing marker problem' in marker-based motion analysis that does not require additional assumptions about the biodynamic model." Journal of Biomechanics, 46(13), 2173-2178.

See also

fillGapsLinear(), fillGaps(), detectGaps()

Examples

x <- c(1, NA, NA, 4, 5, NA, 7)
fillGapsSpline(x)
#> [1] 1 2 3 4 5 6 7