mixAK (version 5.8)

SP2Rect: Conversion of a symmetric matrix stored in a packed format (lower triangle only) into a matrix

Description

It creates a symmetric matrix from its lower triangle.

Usage

SP2Rect(LT, dim)

Value

A matrix.

Arguments

LT

a numeric vector with the lower triangle (stored columnwise) of the matrix we want to reconstruct.

dim

number of rows and columns of a resulting matrix.

Author

Arnošt Komárek

Examples

SP2Rect(3, dim=1)
SP2Rect(c(1, 0.5, 2), dim=2)
SP2Rect(c(1, 0.5, 0.25, 2, -0.5, 3), dim=3)