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lines 6-32 of file: example/json/sparse.cpp
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{xrst_begin json_sparse.cpp}

Json Representation of a Sparse Matrix: Example and Test
########################################################

Discussion
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The example using a CppAD Json to represent the sparse matrix

.. math::

   \partial_x f(x, p) = \left( \begin{array}{ccc}
      p_0 & 0    & 0 \\
      0   & p_1  & 0 \\
      0   & 0    & c_0
   \end{array} \right)

where :math:`c_0` is the constant 3.

Source Code
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{xrst_literal
   // BEGIN C++
   // END C++
}

{xrst_end json_sparse.cpp}