.. include:: /substitutions.rst

.. _rfactortype:

R_FACTOR_TYPE
=============

R_FACTOR_TYPE determines what definition of the |R factor| is used in
|R-factor| calculations, including during the search. For details, see
|R-factor| :ref:`calculation<r-factor_calculation>`.

**Default:** 1

**Allowed values:** 1 (Pendry), 2 (R2)

**Syntax:**

::

   R_FACTOR_TYPE = 2