For a dfm object, return the dfm with only the first or last n documents.

Usage

# S3 method for dfm
head(x, n = 6L, ...)

# S3 method for dfm
tail(x, n = 6L, ...)

Value

A dfm class object corresponding to the subset of documents
determined by by n.

Arguments

x

a dfm object

n

an integer vector of length up to dim(x) (or 1,
for non-dimensioned objects). A logical is silently coerced to
integer. Values specify the indices to be
selected in the corresponding dimension (or along the length) of the
object. A positive value of n[i] includes the first/last
n[i] indices in that dimension, while a negative value
excludes the last/first abs(n[i]), including all remaining
indices. NA or non-specified values (when length(n) <
length(dim(x))) select all indices in that dimension. Must
contain at least one non-missing value.