take the pointwise exponential or the exponential map of an object.
Syntax
result = exp(x)
Description
For an MTEX object, exp(x, …) calls x.exp(…). Additional positional and keyword arguments are passed to that method unchanged. Its documentation specifies the accepted inputs, units, symmetry handling and optional outputs. Consult the corresponding method for the behaviour of a particular object type.
For numeric arrays without an MTEX method, this calls numpy.exp.
Signature
exp(x, *args, **kwargs)
Methods it calls
| orientation | the rotation a tangent vector at this reference points to, exp(ori, v) of MATLAB |
| S1FunHarmonic | the pointwise exponential, a Fourier series of a smoothing bandwidth, or at the bandwidth given |
| S2FunHandle | the pointwise exponential, a handle evaluated when asked |
| S2FunHarmonic | the exponential of the function, expanded by quadrature, or at the bandwidth given |
| SO3FunCBF | the exponential of the function, pointwise, as a function handle |
| SO3FunHarmonic | the exponential of the function, by quadrature at twice the bandwidth, or at the bandwidth given |
| SO3FunRBF | the exponential of the function, pointwise, as a function handle |
| SO3TangentVector | return the rotations reached by the tangent vectors from their references |
| spinTensor | the rotation a spin tensor generates, the exponential of its axial vector, or the orientation a spin at a reference orientation leads to |
| vector3d | the rotation vector to its rotation: at the identity, or at a reference as a tangent vector |
Used on
RotationSpinTensor, RotationTangentSpace
source
Citing this page.
This page is part of the documentation of
MTEX, a free and open
source MATLAB toolbox for analyzing and modeling crystallographic textures.
It was written by The MTEX Developers and is published at
https://mtex-toolbox.github.io/exp_py.html.
If you use MTEX, or reuse text or figures from this page, in your research,
please cite
F. Bachmann, R. Hielscher, H. Schaeben: Texture Analysis with MTEX - Free and Open Source Software Toolbox, Solid State Phenomena 160 (2010), 63-68. 10.4028/www.scientific.net/SSP.160.63
BibTeX
@article{bachmann2010mtex,
author = {F. Bachmann and R. Hielscher and H. Schaeben},
title = {Texture Analysis with MTEX - Free and Open Source Software Toolbox},
journal = {Solid State Phenomena},
volume = {160},
pages = {63-68},
year = {2010},
doi = {10.4028/www.scientific.net/SSP.160.63},
url = {https://doi.org/10.4028/www.scientific.net/SSP.160.63}
}Other papers describing specific MTEX methods are listed under Publications — please cite the one that best fits your application. The MTEX source code is licensed under the GNU General Public License v2.0; the text and figures of this documentation are licensed under CC BY 4.0, which permits reuse — including by automated systems — provided The MTEX Developers and this page are credited.