```{index} single: Filters; Convert Quaternion Order
```
# Convert Quaternion Order

## Group (Subgroup)

OrientationAnalysis (Conversions)

## Description

Internally DREAM3D-NX assumes that a quaternion is laid out in the order such that < x, y, z >, w or Vector-Scalar ordering. Codes and algorithms external to DREAM3D-NX may store quaternions in the opposite or Scalar-Vector order (w < x,y,z >). This filter will allow the user to easily convert imported Quaternions into the representation that DREAM3D-NX expects.

For Example if the user has imported quaternion data in the form of Scalar-Vector then they would run this filter using a conversion type of **ToVectorScalar** and using the generated quaternions in subsequent filters. If the user wanted to then write out the Quaternions in the Scalar-Vector form then could add this filter again to the end of the pipeline (but before writing out data) to convert the Vector-Scalar quaternions array (assuming something modified the array).


### Input Parameter(s)

| Parameter Name | Parameter Type | Parameter Notes | Description |
|----------------|----------------|-----------------|-------------|
| Delete Original Data | Bool |  | Should the original quaternions array be deleted from the DataStructure |
| Conversion Type | Choices |  | The conversion type: To Scalar Vector=0, To Vector Scalar=1 |

### Input Data

| Parameter Name | Parameter Type | Parameter Notes | Description |
|----------------|----------------|-----------------|-------------|
| Input Quaternions | Array Selection | Allowed Types: float32 Comp. Shape: 4 | Specifies the quaternions to convert |

### Output Data

| Parameter Name | Parameter Type | Parameter Notes | Description |
|----------------|----------------|-----------------|-------------|
| Output Quaternions | DataObjectName |  | The DataPath to the converted quaternions |

## Example Pipelines

## License & Copyright

Please see the description file distributed with this plugin.

## DREAM3D-NX Help

If you need help, need to file a bug report or want to request a new feature, please head over to the [DREAM3DNX-Issues](https://github.com/BlueQuartzSoftware/DREAM3DNX-Issues/discussions) GitHub site where the community of DREAM3D-NX users can help answer your questions.