PhenoTrs: A fitting function

In phenopix: Process Digital Images of a Vegetation Cover

Description

See PhenoTrs from package greenbrown for details.

Usage

PhenoTrs(x, approach = c("White", "Trs"), trs = 0.5, min.mean = 0.1, 
  formula = NULL, uncert = FALSE, params = NULL, breaks, ...)

Arguments

x	seasonal cycle of one year
approach	approach to be used to calculate phenology metrics. 'White' (White et al. 1997) or 'Trs' for simple threshold.
trs	threshold to be used for approach "Trs"
min.mean	minimum mean annual value in order to calculate phenology metrics. Use this threshold to suppress the calculation of metrics in grid cells with low average values
formula	Returned from previous steps of the process
uncert	Currently unused
params	Returned from previous steps of the process
breaks	Currently unused
...	further arguments (currently not used)

Examples

data(bartlett2009.fitted)
trs.phenophases <- PhenoTrs(
  x=bartlett2009.fitted$fit$predicted, 
  fit=bartlett2009.fitted$fit)
plot(bartlett2009.fitted$fit$predicted)
abline(v=trs.phenophases[c(1:2,4)], col=palette())

phenopix documentation built on May 2, 2019, 4:50 p.m.