# EPSGetEigenvectorLeft

Gets the i-th left eigenvector as computed by EPSSolve() (only available in two-sided eigensolvers).

### Synopsis

    #include "slepceps.h"
    PetscErrorCode EPSGetEigenvectorLeft(EPS eps,PetscInt i,Vec Wr,Vec Wi)

Logically Collective on EPS

### Input Parameters

| eps | - eigensolver context
| i | - index of the solution

### Output Parameters

| Wr | - real part of eigenvector
| Wi | - imaginary part of eigenvector

### Notes

If the corresponding eigenvalue is real, then Wi is set to zero. If PETSc is configured with complex scalars the eigenvector is stored directly in Wr (Wi is set to zero).

The index i should be a value between 0 and nconv-1 (see EPSGetConverged()). Eigenpairs are indexed according to the ordering criterion established with EPSSetWhichEigenpairs().

### See Also

EPSSolve(), EPSGetConverged(), EPSSetWhichEigenpairs(),
EPSGetEigenpair(), EPSGetEigenvector()

Location: src/eps/interface/solve.c
Index of all EPS routines
Table of Contents for all manual pages
Index of all manual pages

### Examples

src/eps/examples/tutorials/ex12.c.html