phenofit (version 0.2.5-2)

init_param: init_param

Description

Initialize parameters of double logistic function

Usage

init_param(y, t, w)

Arguments

y

input vegetation index time-series.

t

the corresponding doy(day of year) of y.

w

weights

Examples

# NOT RUN {
library(phenofit)
# simulate vegetation time-series
fFUN = doubleLog.Beck
par  = c(
    mn  = 0.1,
    mx  = 0.7,
    sos = 50,
    rsp = 0.1,
    eos = 250,
    rau = 0.1)
t    <- seq(1, 365, 8)
tout <- seq(1, 365, 1)
y <- fFUN(par, t)

l_param <- init_param(y, t)
# }