Blurb::
Specifies the diagonal matrix format when specifying a
user-specified proposal covariance.
Description::
When specifying the MCMC proposal covariance in an input file, this
keyword declares the use of a diagonal matrix format, i.e., the user
only provides the (positive) values along the diagonal.
Topics::

Examples::

.. code-block::

    method,
            bayes_calibration queso
             samples = 1000 seed = 348
              dram
              proposal_covariance
                diagonal values 1.0e6 1.0e-1


Theory::

Faq::

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