# PetscObjectComposedDataSetScalarstar
attach scalar array data to a `PetscObject` that may be retrieved with `PetscObjectComposedDataSetScalarstar()` 
## Synopsis
```
#include "petsc/private/petscimpl.h"
PetscErrorCode PetscObjectComposedDataSetScalarstar(PetscObject obj,int id,PetscScalar *data)
```
Not collective


## Input parameters

- ***obj -*** the object to which data is to be attached
- ***id -*** the identifier for the data
- ***data -*** the data to  be attached



## Notes
The data identifier can be determined through a call to `PetscObjectComposedDataRegister()`

The length of the array accessed must be known, it is not available through this API.




## See Also
 `PetscObjectComposedDataSetInt()`, `PetscObjectComposedDataSetReal()`, `PetscObjectComposedDataGetReal()`, `PetscObjectComposedDataSetIntstar()`,
`PetscObjectComposedDataSetIntstar()`, `PetscObjectComposedDataGetInt()`, `PetscObject`,
`PetscObjectCompose()`, `PetscObjectQuery()`, `PetscObjectComposedDataSetRealstar()`, `PetscObjectComposedDataGetScalarstar()`

## Level
developer

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/include/petsc/private/petscimpl.h.html#PetscObjectComposedDataSetScalarstar">include/petsc/private/petscimpl.h</A>


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