lotriMatInv: Converts a matrix into a list of block matrices

In nlmixrdevelopment/lotri: A Simple Way to Specify Symmetric, Block Diagonal Matrices

Description

Converts a matrix into a list of block matrices

Usage

lotriMatInv(mat)

Arguments

mat	Matrix to convert to a list of block matrices

Details

This is the inverse of 'lotriMat()'

Value

A list of block matrixes

Author(s)

Matthew Fidler

Examples

# Create a block matrix using `lotri()`
mat <- lotri({
   a+b ~ c(1,
           0.5, 1)
   c ~ 1
   d +e ~ c(1,
            0.5, 1)
})

print(mat)

# now convert t a list of matrices

mat2 <- lotriMatInv(mat)
print(mat2)

# Of course you can convert it back to a full matrix:

mat3 <- lotriMat(mat2)

print(mat3)

nlmixrdevelopment/lotri documentation built on April 22, 2021, 2:21 a.m.