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Show head and tail rows of a matrix-like object

Source: R/util.R
headtail.Rd

Returns the first and last n rows of a matrix or data frame. If the input has fewer than 2*n rows, overlapping rows are returned only once.

Usage

headtail(x, n = 6)

Arguments

x

A matrix or data frame.

n

Number of rows to take from the top and bottom.

Value

A subset of x containing head and tail rows.

Author

2024-2026 Tobias Schmidt: initial version.

Examples

x <- matrix(seq_len(30), nrow = 10)
headtail(x, n = 2)
#>      [,1] [,2] [,3]
#> [1,]    1   11   21
#> [2,]    2   12   22
#> [3,]    9   19   29
#> [4,]   10   20   30