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Export StatsGenerator ODF Angle File

Group (Subgroup)

IO (Output)

Description

This Filter is used in a workflow where the user would like to generate a synthetic microstructure with an ODF that matches (as closely as possible) an existing experimental data set or other data set that is being mimicked. The basic workflow is the following:

  1. Import Euler angle data (e.g., ANG or CTF files)
  2. Optionally threshold the data so each cell is marked as allowable or not-allowable
  3. Insert the "Export StatsGenerator ODF Angle File" Filter in the Pipeline
  4. Run the Pipeline to produce the file
  5. Launch StatsGenerator
  6. Generate the data
  7. Click on the ODF Tab
  8. Click on the Bulk Load sub tab
  9. Select the file that was just written
  10. Load the data and inspect the ODF that was generated

Important Change from Earlier Versions of StatsGenerator

StatsGenerator can not load data from standard .ang or .ctf files. If you want to get the ODF from an existing experimental data set and you have one of those files then you must use the functionality of this filter

Notes on Implementation

  • A separate file is written for each phase
  • Spaces are the default as the delimiters between values. The user can select another value
  • Default values of 1.0 are used for both the weight and sigma. If the user needs a stronger texture due to a low number of angles then larger values should be used such as 10, 100 or even 1000.
  • The user has the option to convert the supplied Euler angles to degrees. StatsGenerator is able to import Euler angles as either degrees or radians based on user input, so the output type from this Filter could remain as radians or be converted to degrees. The user should remain cognizant of what representation their angles are in so that the correct option is chosen during the import process in StatsGenerator

Example File

The file written is a simple text file that contains a short comment section and a single Header line of data. All comment lines should come BEFORE the actual header line. There is a single header line in the form of "Key:Value" and then the lines of data.

# All lines starting with '#' are comments and should come before the header.
# DREAM.3D StatsGenerator Angles Input File
# DREAM.3D Version 6.1.107.0d8bad9
# Angle Data is space delimited.
# Euler0 Euler1 Euler2 Weight Sigma
Angle Count:100
0 0 0 1 1
3.6 1.8 3.6 1 1
7.2 3.6 7.2 1 1
10.8 5.4 10.8 1 1
14.4 7.2 14.4 1 1

The only required header line is:

Angle Count:100

There are 5 columns of data which are the 3 Euler Angles, the Weight Value and the Sigma Value.

Delimiter

Choice of delimiter is as follows:

0 = , (comma)
1 = ; (semicolon)
2 = (space)   <==== DEFAULT VALUE
3 = : (colon)
4 = \t (tab)

Parameters

Name Type Description
Output File File Path Output angles file path
Default Weight float This value will be used for the Weight column
Default Sigma int This value will be used for the Sigma column
Delimiter Enumeration The delimeter separating the data
Convert to Degrees bool Whether to convert the Euler angles from radians to degrees. If the Euler angles are already in degrees, this option will "convert" the data again, resulting in garbage orientations!
Only Write Good Elements bool Whether to only write the Euler angles for those elements denoted as true in the supplied mask array

Required Objects

Kind Default Name Type Component Dimensions Description
Element Attribute Array EulerAngles float (3) Three angles defining the orientation of the Element in Bunge convention (Z-X-Z)
Element Attribute Array Phases int32_t (1) Specifies to which Ensemble each Element belongs
Element Attribute Array Mask bool (1) Used to define Elements as good or bad. Only required if Only Write Good Elements is checked

Created Objects

None

Example Pipelines

  • Export Small IN100 ODF Data (StatsGenerator)

Please see the description file distributed with this Plugin

DREAM.3D Mailing Lists

If you need more help with a Filter, please consider asking your question on the DREAM.3D Users Google group!