Sparse (.sparse) Accessor
=========================

.. currentmodule:: pandasCore

Access sparse methods on Series/DataFrame with sparse data via ``.sparse``.

Example
-------

.. code-block:: python

   import pandasCore as pd

   # Create sparse series
   s = pd.Series([0, 0, 1, 0, 2], dtype=pd.SparseDtype())
   s.sparse.density      # 0.4
   s.sparse.fill_value   # 0
   s.sparse.sp_values    # [1, 2]

Attributes
----------

.. list-table::
   :widths: 25 75
   :header-rows: 1

   * - Attribute
     - Description
   * - density
     - Density of non-fill values
   * - fill_value
     - Fill value for sparse array
   * - npoints
     - Number of stored points
   * - sp_values
     - Non-fill values

Methods
-------

.. list-table::
   :widths: 25 75
   :header-rows: 1

   * - Method
     - Description
   * - to_dense()
     - Convert to dense array
   * - to_coo()
     - Convert to COO sparse matrix
   * - from_coo(A)
     - Create from COO matrix