2.3.3.3.158. NXmicrostructure_odf¶
Status:
base class, extends NXprocess
Description:
Base class to store an orientation distribution function (ODF). ...
Base class to store an orientation distribution function (ODF).
An orientation distribution function is a probability distribution that details how much volume of material has a specific orientation. An ODF is computed from pole figure data in a computational process called pole figure inversion.
Symbols:
n_varphi_one: Number of pixel per varphi section plot along the \(\varphi_1\) fastest direction.
n_capital_phi: Number of pixel per varphi section plot along the \(\Phi\) fast direction.
n_varphi_two: Number of pixel per varphi section plot along the \(\varphi_2\) slow direction.
k: Number of local maxima evaluated in the component analysis.
n_pos: Number of sampled positions in orientation space.
Structure:
configuration: (optional) NXobject
Details about the algorithm used for computing the ODF.
crystal_symmetry_point_group: (optional) NX_CHAR
Point group of the crystal structure of the phase for which the here documen ...
Point group of the crystal structure of the phase for which the here documented phase- dependent ODF was computed.(following the notation of the International Table of Crystallography).
specimen_symmetry_point_group: (optional) NX_CHAR
Point group assumed for additionally considered sample symmetries ...
Point group assumed for additionally considered sample symmetries following the notation of the International Table of Crystallography).
kernel_halfwidth: (optional) NX_NUMBER {units=NX_ANGLE}
Halfwidth of the kernel.
kernel_name: (optional) NX_CHAR
Name of the kernel.
resolution: (optional) NX_NUMBER {units=NX_ANGLE}
Resolution of the kernel.
kth_extrema: (optional) NXobject
Group to store descriptors and summary statistics for extrema of the ODF.
extrema: (optional) NX_CHAR
Minima or maxima, if extrema is set to minima values for location and volume ...
Minima or maxima, if extrema is set to minima values for location and volume_fraction are sorted in increasing order. If extrema is set to maxima values for location and volume_fraction are sorted in descreasing order. Therefore, the global extremum is always the first entry in location and volume_fraction.
Any of these values:
minima|maximakth: (optional) NX_UINT {units=NX_UNITLESS}
Number of local extrema evaluated
theta: (optional) NX_NUMBER {units=NX_ANGLE}
Disorientation threshold within which intensity of the ODF ...
Disorientation threshold within which intensity of the ODF is integrated for the component analysis.
location: (optional) NX_NUMBER (Rank: 2, Dimensions: [k, 3]) {units=NX_ANGLE}
Euler angle representation :math:`\varphi_1`, :math:`\Phi`, :math:`\varphi_2 ...
Euler angle representation \(\varphi_1\), \(\Phi\), \(\varphi_2\) of the kth-most maxima in decreasing order of the intensity maximum.
volume_fraction: (optional) NX_NUMBER (Rank: 1, Dimensions: [k]) {units=NX_ANY}
Integrated ODF intensity within a theta angular region of the orientation sp ...
Integrated ODF intensity within a theta angular region of the orientation space (SO3) about each location (obeying symmetries) as specified for each location.
sampling: (optional) NXobject
The ODF intensity values (weights) as sampled with a software
resolution: (optional) NX_NUMBER {units=NX_ANGLE}
Sampling resolution
euler: (optional) NX_NUMBER (Rank: 2, Dimensions: [n_pos, 3]) {units=NX_ANGLE}
Bunge-Euler (i.e. ZXZ convention) locations of each position ...
Bunge-Euler (i.e. ZXZ convention) locations of each position in orientation space for which a weight was sampled.
weight: (optional) NX_NUMBER (Rank: 1, Dimensions: [n_pos]) {units=NX_DIMENSIONLESS}
Weight at each sampled position following the order in euler.
phi_two_plot: (optional) NXdata
Visualization of the ODF intensity as discretized orthogonal sections through ...
Visualization of the ODF intensity as discretized orthogonal sections through orientation space parameterized using Bunge-Euler angles.
This is one example of typical default plots used in the texture community in materials engineering.
Mind that when parameterized using Euler angles the orientation space is a distorted space. Therefore, equivalent orientations show intensity contributions in eventually multiple locations.
intensity: (optional) NX_NUMBER (Rank: 3, Dimensions: [n_varphi_two, n_capital_phi, n_varphi_one]) {units=NX_DIMENSIONLESS} ⤆
ODF intensity at probed locations relative to the intensity of the null mode ...
ODF intensity at probed locations relative to the intensity of the null model of a random texture.
varphi_one: (optional) NX_NUMBER (Rank: 1, Dimensions: [n_varphi_one]) {units=NX_ANGLE} ⤆
Pixel center angular position along the \(\varphi_1\) direction.
capital_phi: (optional) NX_NUMBER (Rank: 1, Dimensions: [n_capital_phi]) {units=NX_ANGLE} ⤆
Pixel center angular position along the \(\Phi\) direction.
varphi_two: (optional) NX_NUMBER (Rank: 1, Dimensions: [n_varphi_two]) {units=NX_ANGLE} ⤆
Pixel center angular position along the \(\varphi_2\) direction.
Hypertext Anchors¶
List of hypertext anchors for all groups, fields, attributes, and links defined in this class.
