Extracts the time the first or last
observation was taken, or computes the
range.
Usage
## S3 method for class 'timeDate'
start(x, ...)
## S3 method for class 'timeDate'
end(x, ...)
## S3 method for class 'timeDate'
min(..., na.rm = FALSE)
## S3 method for class 'timeDate'
max(..., na.rm = FALSE)
## S3 method for class 'timeDate'
range(..., na.rm = FALSE)
Arguments
x
an object of class timeDate.
...
[start][end] -
not used,
[min][max] -
'timeDates' objects.
na.rm
not used.
Details
Note, the series will be time ordered before the start or
end time stamps are extracted. Sorting is done in the
way that the first observation appears in time before the
last observation.
Value
returns an object of class timeDate.
Examples
## timeCalendar -
# Random Calendar Dates:
tR = sample(timeCalendar())
sort(tR)
tR
## start | end -
start(tR)
end(tR)
## The First and Last Time Stamp:
tR[1]
tR[length(tR)]
rev(tR)[1]
## The Range:
c(start(tR), end(tR))
range(tR)