PetscDASetObsErrorVariance

Sets the observation-error variances associated with a PetscDA.

Synopsis

PetscErrorCode PetscDASetObsErrorVariance(PetscDA da, Vec obs_error_var)

Collective

Input Parameters

• da - the PetscDA context

• obs_error_var - vector containing observation error variances (assumes R is a diagonal matrix)

Notes

This function creates or updates both the observation error variance vector and the observation error covariance matrix R. The matrix R is constructed as a diagonal matrix with the variances on the diagonal.

See Also

PetscDA: Data Assimilation, PetscDAGetObsErrorVariance()

Level

beginner

Location

src/ml/da/interface/petscda.c

Examples

src/ml/da/tutorials/ex4.c
src/ml/da/tutorials/ex3.c
src/ml/da/tutorials/ex2.c
src/ml/da/tutorials/ex1.c

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Index of all PetscDA routines
Table of Contents for all manual pages
Index of all manual pages