Ignore:
Timestamp:
May 16, 2020 8:55:12 AM (18 months ago)
Author:
toby
Message:

add R.B. extractor; misc doc updates; plt bug after strip Hs; grid bug: uncompleted edits; mac horz. line fix

File:
1 edited

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  • trunk/GSASIIlattice.py

    r4415 r4421  
    1919The "*A* tensor" terms are defined as
    2020:math:`A = (\\begin{matrix} G_{11} & G_{22} & G_{33} & 2G_{12} & 2G_{13} & 2G_{23}\\end{matrix})` and *A* can be used in this fashion:
    21 :math:`d^* = \sqrt {A_1 h^2 + A_2 k^2 + A_3 l^2 + A_4 hk + A_5 hl + A_6 kl}`, where
     21:math:`d^* = \sqrt {A_0 h^2 + A_1 k^2 + A_2 l^2 + A_3 hk + A_4 hl + A_5 kl}`, where
    2222*d* is the d-spacing, and :math:`d^*` is the reciprocal lattice spacing,
    23 :math:`Q = 2 \\pi d^* = 2 \\pi / d`
     23:math:`Q = 2 \\pi d^* = 2 \\pi / d`.
     24Note that GSAS-II variables ``p::Ai`` (``i``=0,1,...5) and ``p`` is a phase number are
     25used for the *Ai* values. See :func:`A2cell`, :func:`cell2A` for interconversion between A and
     26unit cell parameters; :func:`cell2Gmat` :func:`Gmat2cell` for G and cell parameters.
     27
     28When the hydrostatic/elastic strain coefficients (*Dij*, :math:`D_{ij}`) are used, they are added to the
     29*A* tensor terms (Ai, :math:`A_{i}`) so that A is redefined
     30:math:`A = (\\begin{matrix} A_{0} + D_{11} & A_{1} + D_{22} & A_{2} + D_{33} & A_{3} + 2D_{12} & A_{4} + 2D_{13} & A_{5} + 2D_{23}\\end{matrix})`. See :func:`cellDijFill`.
     31Note that GSAS-II variables ``p:h:Dij`` (``i``,``j``=1,2,3) and ``p`` is a phase number
     32and ``h`` a histogram number are used for the *Dij* values.
    2433'''
    2534########### SVN repository information ###################
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