SVDMonitorFirstDrawLG#

Plots the error estimate of the first unconverged approximation at each iteration of the singular value solver.

Synopsis#

#include "slepcsvd.h" 
PetscErrorCode SVDMonitorFirstDrawLG(SVD svd,PetscInt its,PetscInt nconv,PetscReal sigma[],PetscReal errest[],PetscInt nest,PetscViewerAndFormat *vf)

Collective

Input Parameters#

  • svd - the singular value solver context

  • its - iteration number

  • nconv - number of converged singular triplets so far

  • sigma - singular values

  • errest - error estimates

  • nest - number of error estimates to display

  • vf - viewer and format for monitoring

Options Database Key#

Notes#

This is not called directly by users, rather one calls SVDMonitorSet(), with this function as an argument, to cause the monitor to be used during the SVD solve.

Call SVDMonitorFirstDrawLGCreate() to create the context used with this monitor.

See Also#

SVD: Singular Value Decomposition, SVDMonitorSet(), SVDMonitorFirstDrawLGCreate()

Level#

intermediate

Location#

src/svd/interface/svdmon.c

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