SVDErrorView#

Displays the errors associated with the computed solution (as well as the singular values).

Synopsis#

#include "slepcsvd.h" 
PetscErrorCode SVDErrorView(SVD svd,SVDErrorType etype,PetscViewer viewer)

Collective

Input Parameters#

  • svd - the singular value solver context

  • etype - error type

  • viewer - optional visualization context

Options Database Keys#

  • -svd_error_absolute - print absolute errors of each singular triplet

  • -svd_error_relative - print relative errors of each singular triplet

  • -svd_error_norm - print errors relative to the matrix norms of each singular triplet

Notes#

By default, this function checks the error of all singular triplets and prints the singular values if all of them are below the requested tolerance. If the viewer has format=PETSC_VIEWER_ASCII_INFO_DETAIL then a table with singular values and corresponding errors is printed.

See Also#

SVD: Singular Value Decomposition, SVDSolve(), SVDValuesView(), SVDVectorsView()

Level#

intermediate

Location#

src/svd/interface/svdview.c

Examples#

src/svd/tutorials/ex14.c
src/svd/tutorials/ex48.c
src/svd/tutorials/ex51.c
src/svd/tutorials/ex53.c
src/svd/tutorials/ex52.c

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