interleave {interleave}

Interleave

Description

Converts matrices and lists of matrices into a vector. The elements of the vector are taken from the matrices one row at a time.

Usage

interleave(x)

Arguments

x

object to interleave

Value

vector of interleaved values

Examples

## matrix (this is equivalent to a LINESTRING in spatial structures)
m1 <- matrix(1:20, ncol = 2, byrow = TRUE )
interleave( m1 )

## This is the same as transposing and removing the 'dim' attribute
tm <- t(m1)
attr( tm, "dim" ) <- NULL
all( interleave( m1 ) == tm )

## list of matrices (this is equivalent to a POLYGON in spatial structures)
m2 <- matrix(20:1, ncol = 2, byrow = TRUE )
l <- list( m1, m2 )
interleave( l )

## nested list of matrices
l <- list( m1, list( list( m2 ) ) )
interleave( l )