# TSTrajectorySetDirname
Specify the name of the directory where `TSTrajectory` disk checkpoints are stored. 
## Synopsis
```
#include "petscts.h"  
PetscErrorCode TSTrajectorySetDirname(TSTrajectory tj, const char dirname[])
```
Collective


## Input Parameters

- ***tj      -*** the `TSTrajectory` context
- ***dirname -*** the directory name



## Options Database Key

- ***-ts_trajectory_dirname -*** set the directory name





## Notes
The final location of the files is determined by dirname/filetemplate where filetemplate was provided by `TSTrajectorySetFiletemplate()`

If this is not called `TSTrajectory` selects a unique new name for the directory


## See Also
 [](chapter_ts), `TSTrajectory`, `TSTrajectorySetFiletemplate()`, `TSTrajectorySetUp()`

## Level
developer

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ts/trajectory/interface/traj.c.html#TSTrajectorySetDirname">src/ts/trajectory/interface/traj.c</A>


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