Anas2mat.m

Converts the isotropic part, anisotropy, asymmetry, and Euler angles of a 3x3 interaction tensor, in the Haeberlen-Mehring convention, into the corresponding matrix; although this representation is still common in the literature, reporting the original matrix is usually clearer.

Syntax

    M=anas2mat(iso,an,as,alp,bet,gam)

Parameters

       iso  - isotropic part of the interaction, defined as
              (xx+yy+zz)/3 in terms of eigenvaues

        an  - interaction anisotropy, defined as zz-(xx+yy)/2
              in terms of eigenvalues

        as  - interaction asymmetry, defined as (yy-xx)/(zz-iso)
              in terms of eigenvalues

       alp  - alpha Euler angle in radians

       bet  - beta Euler angle in radians

       gam  - gamma Euler angle in radians

Outputs

    M  - 3x3 matrix

Notes

The reverse transformation (from matrix into anisotropy, asymmetry, and angles) is ill-defined.

See also

eeqq2nqi.m, castep2nqi.m, euler2dcm.m, xyz2dd.m, spsk2mat.m, axrh2mat.m

Version 2.1, authors: Ilya Kuprov