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+.. _peirce_q:
+
+********************************************************************************
+Peirce Quincuncial
+********************************************************************************
+
++---------------------+----------------------------------------------------------+
+| **Classification** | Miscellaneous |
++---------------------+----------------------------------------------------------+
+| **Available forms** | Forward spherical projection |
++---------------------+----------------------------------------------------------+
+| **Defined area** | Global |
++---------------------+----------------------------------------------------------+
+| **Alias** | peirce_q |
++---------------------+----------------------------------------------------------+
+| **Domain** | 2D |
++---------------------+----------------------------------------------------------+
+| **Input type** | Geodetic coordinates |
++---------------------+----------------------------------------------------------+
+| **Output type** | Projected coordinates |
++---------------------+----------------------------------------------------------+
+
+
+.. figure:: ./images/peirce_q.png
+ :width: 500 px
+ :align: center
+ :alt: Peirce Quincuncial
+
+ proj-string: ``+proj=peirce_q``
+
+Parameters
+################################################################################
+
+.. note:: All parameters are optional.
+
+.. include:: ../options/lon_0.rst
+
+.. include:: ../options/R.rst
+
+.. include:: ../options/x_0.rst
+
+.. include:: ../options/y_0.rst