trace of the input matrix

Description

trace of the input matrix

Usage

tr(A)

Arguments

Details

Can be used with a character matrix.

Value

trace of A

Examples

tr(demomat(2,2))

# Semi Symbolic Partitioned Matrix:  Super Matrix with SMdim attributes
A=demomat(c(2,3),c(2,3),root="a")
Printb(A)
tr(A)

# Fully Symbolic Partitioned Matrix: No SMdim attribute but
# fullsymb attribute
Ap=demomat(2,2,root="A", fullsymb=1)
Printb(Ap)
tr(Ap)