# TSAdaptHistorySetTrajectory
Sets a time history in the adaptor from a given `TSTrajectory` 
## Synopsis
```
#include "petscts.h" 
PetscErrorCode TSAdaptHistorySetTrajectory(TSAdapt adapt, TSTrajectory tj, PetscBool backward)
```
Logically Collective on adapt


## Input Parameters

- ***adapt    -*** the `TSAdapt` context
- ***tj       -*** the `TSTrajectory` context
- ***backward -*** if the time history has to be followed backward





## Notes
The time history is internally copied, and the user can destroy the `TSTrajectory` if not needed.

The user still needs to specify the termination of the solve via `TSSetMaxSteps()`.


## See Also
 [](chapter_ts), `TSGetAdapt()`, `TSAdaptSetType()`, `TSAdaptHistorySetHistory()`, `TSADAPTHISTORY`, `TSAdapt`

## Level
advanced

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ts/adapt/impls/history/adapthist.c.html#TSAdaptHistorySetTrajectory">src/ts/adapt/impls/history/adapthist.c</A>

## Examples
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ts/tutorials/ex40.c.html">src/ts/tutorials/ex40.c.html</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ts/tutorials/ex41.c.html">src/ts/tutorials/ex41.c.html</A><BR>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/ts/adapt/impls/history/adapthist.c)


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