Move 'Coordinate operations' to top level of docs [skip ci]

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+.. _hatano:
+
+********************************************************************************
+Hatano Asymmetrical Equal Area
+********************************************************************************
+
+
+
+
++---------------------+----------------------------------------------------------+
+| **Classification**  | :term:`Pseudocylindrical Projection`                     |
++---------------------+----------------------------------------------------------+
+| **Available forms** | Forward and inverse, spherical projection                |
++---------------------+----------------------------------------------------------+
+| **Defined area**    | Global, but best between standard parallels              |
++---------------------+----------------------------------------------------------+
+| **Implemented by**  | Gerald I. Evenden                                        |
++---------------------+----------------------------------------------------------+
+| **Options**                                                                    |
++---------------------+----------------------------------------------------------+
+| `+lat_1`            | Standard Parallel 1                                      |
++---------------------+----------------------------------------------------------+
+| `+lat_2`            | Standard Parallel 2                                      |
++---------------------+----------------------------------------------------------+
+| `+sym`              | Symmetric form used instead of asymmetric                |
++---------------------+----------------------------------------------------------+
+
+
+.. image:: ./images/hatano.png
+   :scale: 50%
+   :alt:   Hatano Asymmetrical Equal Area
+
+
+
+Mathematical Definition
+--------------------------------------------------------------------------------
+
+Forward
+................................................................................
+
+.. math::
+
+   x &= 0.85\lambda \cos \theta
+
+   y &= C_y \sin \theta
+
+   P(\theta) &= 2\theta + \sin 2\theta - C_p \sin \phi
+
+   P'(\theta) &= 2(1 + \cos 2\theta)
+
+   \theta_0 &= 2\phi
+
+
+====================================  ==================  ===================
+Condition                                    :math:`C_p`          :math:`C_p`
+====================================  ==================  ===================
+if ``+sym`` or :math:`\phi > 0`                  1.75859              2.67595
+if not ``+sym`` and :math:`\phi < 0`             1.93052              2.43763
+====================================  ==================  ===================
+
+For :math:`\phi = 0`, :math:`y \leftarrow 0`, and :math:`x \leftarrow 0.85\lambda`.
+
+Further reading
+--------------------------------------------------------------------------------
+
+#. `Compare Map Projections <http://map-projections.net/single-view/hatano>`__
+#. `Mathworks <http://www.mathworks.com/help/map/hatano.html>`__
+
+
+