OOF2: The Manual

`Orientation (OrientationGrouper)`
	6.5.2. Subclasses

Name

Orientation (OrientationGrouper) — Group pixels by examining orientation distributions.

Synopsis

OrientationGrouper(microstructure,sigma0,lattice_symmetry)

Details

Base class: PixelGrouper
Parameters:

microstructure

Use the orientation map in this Microstructure Type: The path to an existing Microstructure object.

sigma0

Standard deviation (in degrees) to use for initial distributions Type: A real number.

lattice_symmetry

Assume that the material at each point has this symmetry, making some orientations equivalent. Type: An object of the LatticeSymmetry class.

Description

This is used by OOF.PixelGroup.AutoGroup to automatically create PixelGroups based on an orientation map. Given two pixels, it uses the misorientation of their orientations as the distance between them in orientation space.

sigma0 is the initial standard deviation assigned to a group containing a single pixel. It sets the scale for how far apart two orientations have to be in order to considered to be significantly different. Using a small sigma0 will lead to many small pixel groups with little orientation variation within each group. Using a large sigma0 will lead to fewer pixel groups with more variation within each group.

lattice_symmetry is the crystal symmetry used when computing misorientations.


`Orientation (OrientationDisplay)`		`Orientation Map (OrientationMapDisplay)`