repmat {lazy.mat}

R Documentation

Stack a matrix n times either horizontally or vertically.

Description

Stack a matrix n times either horizontally or vertically.

Usage

repmat(A, n, method = 2)

Arguments

A	Input matrix
n	number of times
method	= 1 to stack matices horizontally to create a nr x (nc x n) matrix. = 2 to stack vertically to create a (nr x n) x nc matrix

Details

When n is a scalar, the whole input is replicated n times.
When n is a vector of length nrow(A), i-th row of A matrix will be replicated n[i] times and verticall stacked.
When the input is a vector, the resul will also be a vector. #'

Can be used with character matrix.

Value

a matrix

Examples

repmat( demomat(2,2), 2 )
repmat( demomat(2,2), 2, method=1 )
repmat( demomat(2,2), 1:2 )


# Semi Symbolic Partitioned Matrix:  Super Matrix with SMdim attributes
A=demomat(c(2,3),c(3,4),root="a")
Printb(A)
repA=repmat(A,2)
Printb(repA)
# with lazy.symbolic package
# trepA=tp(repA)
# Printb(trepA)

# Fully Symbolic Partitioned Matrix:
# No SMdim attribute but fullsymb attribute
Ap=demomat(2,3,root="A", fullsymb=1)
Printb(Ap)
repAp=repmat(Ap,2)
Printb(repAp)
# with lazy.symbolic package
# trepAp=tp(repAp)
# Printb(trepAp)

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