add_HeadTail | R Documentation |
Add the data of the year of year_start - 1
to the head, add the data of the
year of year_end - 1
to the tail.
add_HeadTail(d, south = FALSE, nptperyear, trs = 0.45)
d |
A data.table, should have |
south |
Boolean. In south hemisphere, growing year is 1 July to the following year 31 June; In north hemisphere, growing year is 1 Jan to 31 Dec. |
nptperyear |
Integer, number of images per year. |
trs |
If nmissing < trs*nptperyear (little missing), this year is
include to extract phenology; if |
data.table
date
is image date; t
is compositing date.
library(phenofit)
data("CA_NS6"); d = CA_NS6
nptperyear = 23
dnew <- add_HeadTail(d, nptperyear = nptperyear) # add one year in head and tail
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