qrsol¶
Purpose¶
Computes the solution of \(Rx = b\) where \(R\) is an upper triangular matrix.
Format¶
-
x =
qrsol
(b, R)¶ - Parameters:
b (PxL matrix) – data
R (PxP matrix) – upper triangular matrix
- Returns:
x (PxL matrix) – solution of \(Rx = b\) where \(R\) is an upper triangular matrix.
Remarks¶
qrsol()
applies a backsolve to \(Rx = b\) to solve for x. Generally R will be
the R matrix from a QR factorization. qrsol()
may be used, however, in any situation
where R is upper triangular.
Source¶
qrsol.src