10.5. Compute Feature Average Orientations
Group (Subgroup)
Statistics (Crystallographic)
Description
This Filter determines the average orientation of each Feature by the following algorithm:
Gather all Elements that belong to the Feature
Using the symmetry operators of the phase of the Feature, rotate the quaternion of the Feature’s first Element into the Fundamental Zone nearest to the origin
Rotate each subsequent Elements’s quaternion (with same symmetry operators) looking for the quaternion closest to the quaternion selected in Step 2
Average the rotated quaternions for all Elements and store as the average for the Feature
Note: The process of finding the nearest quaternion in Step 3 is to account for the periodicity of orientation space, which would cause problems in the averaging if all quaternions were forced to be rotated into the same Fundamental Zone
Note: The quaternions can be averaged with a simple average because the quaternion space is not distorted like Euler space.
Input Cell Data
Parameter Name |
Parameter Type |
Parameter Notes |
Description |
|---|---|---|---|
Cell Feature Ids |
Array Selection |
Allowed Types: int32 Comp. Shape: 1 |
Specifies to which Feature each Cell belongs. |
Cell Phases |
Array Selection |
Allowed Types: int32 Comp. Shape: 1 |
Specifies to which Ensemble each Cell belongs |
Cell Quaternions |
Array Selection |
Allowed Types: float32 Comp. Shape: 4 |
Specifies the orientation of the Cell in quaternion representation |
Input Ensemble Data
Parameter Name |
Parameter Type |
Parameter Notes |
Description |
|---|---|---|---|
Crystal Structures |
Array Selection |
Allowed Types: uint32 Comp. Shape: 1 |
Enumeration representing the crystal structure for each Ensemble |
Input Feature Data
Parameter Name |
Parameter Type |
Parameter Notes |
Description |
|---|---|---|---|
Feature Attribute Matrix |
AttributeMatrixSelection |
The path to the cell feature attribute matrix |
Output Feature Data
Parameter Name |
Parameter Type |
Parameter Notes |
Description |
|---|---|---|---|
Average Quaternions |
DataObjectName |
The name of the array specifying the average orientation of the Feature in quaternion representation |
|
Average Euler Angles |
DataObjectName |
The name of the array specifying the orientation of each Feature in Bunge convention (Z-X-Z) |
Example Pipelines
(10) SmallIN100 Full Reconstruction
InsertTransformationPhase
(06) SmallIN100 Postsegmentation Processing
(05) SmallIN100 Crystallographic Statistics
(06) SmallIN100 Synthetic
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 GitHub site where the community of DREAM3D-NX users can help answer your questions.