DescTools (version 0.99.30)

Rev: Reverse Elements of a Vector or the Rows/Columns of Matrices, Tables or Data.frames

Description

Rev provides a reversed version of its argument. It wraps the base function rev and provides an additional method for matrices and higher dimensional tables, such as to reverse the order of rows and columns.

Usage

Rev(x, ...)
# S3 method for matrix
Rev(x, margin, …)
# S3 method for table
Rev(x, margin, …)
# S3 method for data.frame
Rev(x, margin, …)

Arguments

x

a vector, a matrix or a higher dimensional table to be reversed.

margin

vector of dimensions which to be reversed (1 for rows, 2 for columns, etc.).

…

the dots are passed to the matrix, resp. table interface.

See Also

rev, order, sort, seq

Examples

# NOT RUN {
tab <- matrix( c( 1, 11, 111,
                  2, 22, 222,
                  3, 33, 333), byrow=TRUE, nrow=3)

Rev(tab, margin=1)
Rev(tab, margin=2)

# reverse both dimensions
Rev(tab, margin=c(1,2))
# }