petsc-3.12.1 2019-10-22
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# VecTaggerComputeBoxes

If the tagged index set can be summarized as a list of boxes of values, returns that list

### Synopsis

    #include "petscvec.h"
    PetscErrorCode VecTaggerComputeBoxes(VecTagger tagger,Vec vec,PetscInt *numBoxes,VecTaggerBox **boxes)

Collective on VecTagger

### Input Aguments

| tagger | - the VecTagger context
| vec | - the vec to tag

### Output Arguments

| numBoxes | - the number of boxes in the tag definition
| boxes | - a newly allocated list of boxes. This is a flat array of (BlockSize * numBoxes) pairs that the user can free with PetscFree().

### Notes

A value is tagged if it is in any of the boxes, unless the tagger has been inverted (see VecTaggerSetInvert()/VecTaggerGetInvert()), in which case a value is tagged if it is in none of the boxes. -

### See Also

VecTaggerComputeIS()

### Level

advanced

### Location

src/vec/vec/utils/tagger/interface/tagger.c

### Examples

src/vec/vec/utils/tagger/examples/tutorials/ex1.c.html

### Implementations

VecTaggerComputeBoxes_Absolute in src/vec/vec/utils/tagger/impls/absolute.c
VecTaggerComputeBoxes_And in src/vec/vec/utils/tagger/impls/and.c
VecTaggerComputeBoxes_CDF_Serial in src/vec/vec/utils/tagger/impls/cdf.c
VecTaggerComputeBoxes_CDF_Gather in src/vec/vec/utils/tagger/impls/cdf.c
VecTaggerComputeBoxes_CDF_Iterative in src/vec/vec/utils/tagger/impls/cdf.c
VecTaggerComputeBoxes_CDF in src/vec/vec/utils/tagger/impls/cdf.c
VecTaggerComputeBoxes_Or in src/vec/vec/utils/tagger/impls/or.c
VecTaggerComputeBoxes_Relative in src/vec/vec/utils/tagger/impls/relative.c
Index of all Vec routines
Table of Contents for all manual pages
Index of all manual pages