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Report Issue| Table of Contents ▸ List of Commands ▸ Matrix Computation ▸ qr | ◀ poweriteration | solve ▶ |
qr | Built-in command |
Arguments:
- _is_reduced_form={ 0:No | 1:Yes }
Description:
Compute QR decomposition of selected matrices.Assuming a selected image A is a matrix of size m×n (m rows, n columns), this command returns the matrices Q and R, so that A = Q*R.
Q is an orthogonal matrix, of size m×m if is_reduced_form==0, or m×min(m,n) otherwise.
R is an upper-trianguler matrix of size m×n if is_reduced_form==0 or min(m,n)×n otherwise.
Q^T*Q = Id.
If n>m, only the first m×m part of R is upper triangular.
Default values:
is_reduced_form=1.
Example of use:
10,10,1,1,'v(100)' +qr +mmul[-2,-1]
