triu_to_full: Expands upper triangular to full matrix.
Description
Expands upper triangular to full matrix.
Usage
triu_to_full(upper_tri, n)
Value
A matrix that is the scaled expansion of the upper triangular matrix.
Arguments
- upper_tri
A matrix representing the uppertriangular part of the matrix,
stacked in column-major order
- n
The number of rows (columns) in the full square matrix.