Pass an Earth Engine date object to R
eedate_to_rdate(ee_date, timestamp = FALSE)
ee_date | ee$date object (ee$Date) |
---|---|
timestamp | Logical. If TRUE, return the date in milliseconds from the Unix Epoch (1970-01-01 00:00:00 UTC) otherwise return the date as a POSIXct object. By default FALSE. |
eedate_to_rdate
will return either a numeric timestamp or
a POSIXct object depending on the timestamp
argument.
eedate_to_rdate
is essential to avoid potential errors that
might appear when users call to retrieve dates. Currently,
R integer only support 32 bit signed, such integers can only
count up to about 2 billion. This range is extremely insufficient for dealing
with Google Earth Engine date objects (ee$Date), which are represented
by timestamps in milliseconds since the UNIX epoch. eedate_to_rdate
use Python as a backend to obtain the date and convert it in float before
exporting to R.
Other date functions:
ee_get_date_ic()
,
ee_get_date_img()
,
rdate_to_eedate()
if (FALSE) { library(rgee) ee_Initialize() eeDate <- ee$Date$fromYMD(2010,1,1) eedate_to_rdate(eeDate,timestamp = TRUE) # good eeDate$getInfo()$value # bad }