optimal_span: Calculates the optimal span for a loess spline

In bnasr/phenocamrCS: Facilitates 'PhenoCam' Data Access and Time Series Post-Processing

Description

The optimal span is calculated based upon the bayesian information criterion (BIC).

Usage

optimal_span(
  y,
  x = NULL,
  weights = NULL,
  step = 0.01,
  label = NULL,
  plot = FALSE
)

Arguments

y	a vector with measurement values to smooth
x	a vector with dates / time steps
weights	optional values to weigh the loess fit with
step	span increment size
label	title to be used when plotting function output
plot	plot visual output of the optimization routine

Value

Returns an optimal span to smooth a provided vector using the 'loess()' smoother.

Examples

## Not run: 
# Internal function only, should not be used stand-alone.
l <- sin(seq(1,10,0.01))
l <- l + runif(length(l))
optimal_span(l, plot = TRUE)

## End(Not run)

bnasr/phenocamrCS documentation built on June 5, 2020, 3:52 a.m.