Description Usage Arguments Details Value References See Also Examples
Computes a matrix norm of x
, using Lapack for dense matrices.
The norm can be the one norm, the infinity norm, the Frobenius norm,
or the maximum modulus among elements of a matrix, as determined by
the value of type
.
1 |
x |
a real or complex matrix. |
type |
A character indicating the type of norm desired.
The default is |
... |
further arguments passed to or from other methods. |
For dense matrices, the methods eventually call the Lapack functions
dlange
, dlansy
, dlantr
, zlange
,
zlansy
, and zlantr
.
A numeric value of class "norm"
, representing the quantity
chosen according to type
.
Anderson, E., et al. (1994). LAPACK User's Guide, 2nd edition, SIAM, Philadelphia.
onenormest()
, an approximate randomized estimate
of the 1-norm condition number, efficient for large sparse matrices.
1 2 3 4 5 |
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