bw2calc.dense_lca
=================

.. py:module:: bw2calc.dense_lca


Classes
-------

.. autoapisummary::

   bw2calc.dense_lca.DenseLCA


Module Contents
---------------

.. py:class:: DenseLCA

   Bases: :py:obj:`bw2calc.lca.LCA`

   .. autoapi-inheritance-diagram:: bw2calc.dense_lca.DenseLCA
      :parts: 1
      :private-bases:


   .. py:method:: solve_linear_system()

      Master solution function for linear system :math:`Ax=B`.

          To most numerical analysts, matrix inversion is a sin.

          -- Nicolas Higham, Accuracy and Stability of Numerical Algorithms, Society for Industrial and Applied Mathematics, Philadelphia, PA, USA, 2002, p. 260.

      We use `UMFpack <http://www.cise.ufl.edu/research/sparse/umfpack/>`_, which is a very fast solver for sparse matrices.

      If the technosphere matrix has already been factorized, then the decomposed technosphere (``self.solver``) is reused. Otherwise the calculation is redone completely.