Eppley Institute for Cancer Research

University of Nebraska Medical Center

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Evaluating the anisotropic mosaicity

The equation behind the anisotropic mosaicity is:

This values for the mosaicity in h, k, and l are fit by making a variable substitution which effectively transforms the equation into a multivariate linear least squares problem.  The best fit, with respect to the linear least squares, is calculated in a similar fashion to the linear least square problem but is expanded into multiple dimensions.  Basically, it is a matrix formulation of the problem.

The system also provides the multivariate equivalent of the r2 value.

This function is accessed from a statistics window by pressing the "Calculate Anisotropic Mosaicity" button.  The calculation is based on the reflections that have passed the filtering criteria.