matrixcalc: shift.down – R documentation

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shift.down

Shift matrix m rows down

Description

This function returns a matrix that has had its rows shifted downwards filling the above rows with the given fill value.

Usage

shift.down(A, rows = 1, fill = 0)

Arguments

`A`	a matrix
`rows`	the number of rows to be shifted
`fill`	the fill value which as a default is zero

Value

A matrix.

Note

If the argument A is not a numeric matrix, then the function presents an error message and stops. If the argument rows is not a positive integer, then the function presents an error message and stops.

Author(s)

Frederick Novomestky fnovomes@poly.edu

Examples

A <- matrix( seq( 1, 16, 1 ), nrow=4, byrow=TRUE )
shift.down( A, 1 )
shift.down( A, 3 )

matrixcalc

Collection of functions for matrix calculations

v1.0-3

GPL (>= 2)

Authors

Frederick Novomestky <fnovomes@poly.edu>

Initial release

2012-09-12