headtail {berryFunctions}

head and tail

Description

show head and tail of an object with one command

Usage

headtail(x, n = 1, nh = n, nt = n, na = FALSE, ...)

Arguments

x

Object

n

Number of elements/rows/lines at begin and end of object to be returned. DEFAULT: 1

nh, nt

Number for head and tail, respectively. DEFAULT: n

na

Add NA values in between to emphasize visibly that there is something inbetween the values? DEFAULT: FALSE

...

Further arguments passed to head and tail

Details

Tries to find good methods of combining the two results according to class(x).

Value

head result

Author(s)

Berry Boessenkool, [e-mail], Mrz 2016

See Also

head

Examples

head(letters, n=3)
headtail(letters)
headtail(letters, n=3)
headtail(letters, n=3, na=TRUE)

head(letters, n=-10)
headtail(letters, n=-10, na=TRUE) # doesn't make sense for headtail

head(freeny.x, n=3)               # matrix
headtail(freeny.x, n=3, na=TRUE)  # no names for head-part
headtail(women, n=3, na=TRUE)     # data.frame works fine

head(freeny.y, n=3)
headtail(freeny.y, n=3, na=TRUE)

head(library, n=3)
headtail(library, n=3, na=TRUE)
headtail(library, na=TRUE)

ftable(Titanic)
head(stats::ftable(Titanic), n=4)
headtail(stats::ftable(Titanic), n=4, na=TRUE)

head(table(sample(1:9, 30, TRUE)), n=3)
headtail(table(sample(1:9, 30, TRUE)), n=3, na=TRUE)

head(table(state.division, state.region), n=3)
headtail(table(state.division, state.region), n=3, na=TRUE)