petsc-3.14.5 2021-03-03
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# DMLabelGetStratumIS

Get an IS with the stratum points

### Synopsis

    #include "petscdmlabel.h"
    #include "petscsection.h"
    PetscErrorCode DMLabelGetStratumIS(DMLabel label, PetscInt value, IS *points)

Not collective

### Input Parameters

| label | - the DMLabel
| value | - the stratum value

### Output Paramater

| points | - The stratum points

### Notes

The output IS should be destroyed when no longer needed. Returns NULL if the stratum is empty.

### See Also

DMLabelCreate(), DMLabelGetValue(), DMLabelSetValue(), DMLabelClearValue()

### Level

intermediate

### Location

src/dm/label/dmlabel.c

### Examples

src/tao/tutorials/ex3.c.html
Index of all DMLABEL routines
Table of Contents for all manual pages
Index of all manual pages