# DMOutputSequenceLoad
Retrieve the sequence value from a `PetscViewer` 
## Synopsis
```
#include "petscdm.h"          
#include "petscdmlabel.h"     
#include "petscds.h"     
PetscErrorCode DMOutputSequenceLoad(DM dm, PetscViewer viewer, const char *name, PetscInt num, PetscReal *val)
```

## Input Parameters

- ***dm   -*** The original `DM`
- ***name -*** The sequence name
- ***num  -*** The output sequence number



## Output Parameter

- ***val  -*** The output sequence value





## Note
This is intended for output that should appear in sequence, for instance
a set of timesteps in an `PETSCVIEWERHDF5` file, or a set of realizations of a stochastic system.


## Developer Note
It is unclear at the user API level why a `DM` is needed as input


## See Also
 `DMGetOutputSequenceNumber()`, `DMSetOutputSequenceNumber()`, `VecView()`

## Level
intermediate

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/interface/dm.c.html#DMOutputSequenceLoad">src/dm/interface/dm.c</A>


---
[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/dm/interface/dm.c)


[Index of all DM routines](index.md)  
[Table of Contents for all manual pages](/docs/manualpages/index.md)  
[Index of all manual pages](/docs/manualpages/singleindex.md)  
