copy {lsr}

Copies a vector into a matrix

Description

Copies a vector into a matrix

Usage

colCopy(x, times, dimnames = NULL)

rowCopy(x, times, dimnames = NULL)

Arguments

x

The vector to be copied

times

Number of copies of the vector to bind together

dimnames

List specifying row and column names

Details

This is a convenience function for binding together multiple copies of the same vector. The intended usage is for situations where one might ordinarily use rbind or cbind, but the work is done by the matrix function. Instead of needing to input multiple copies of the input vector x (as one would for rbind), one only needs to specify the number of times that the vector should be copied.

Value

For rowCopy, the output is a matrix with times rows and length(x) columns, in which each row contains the vector x. For colCopy, each column corresponds to the vector x.

Examples

#Example 1: basic usage
data <- c(3,1,4,1,5)
rowCopy( data, 4 )
colCopy( data, 4 )

#Example 2: attach dimension names
dnames <- list( rows = c("r1","r2","r3"), cols = c("c1","c2","c3","c4","c5") )
rowCopy( data,3,dnames )