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.. _sinu:
********************************************************************************
Sinusoidal (Sanson-Flamsteed)
********************************************************************************
+---------------------+----------------------------------------------------------+
| **Classification** | Pseudocylindrical |
+---------------------+----------------------------------------------------------+
| **Available forms** | Forward and inverse, spherical and ellipsoidal |
+---------------------+----------------------------------------------------------+
| **Defined area** | Global |
+---------------------+----------------------------------------------------------+
| **Alias** | sinu |
+---------------------+----------------------------------------------------------+
| **Domain** | 2D |
+---------------------+----------------------------------------------------------+
| **Input type** | Geodetic coordinates |
+---------------------+----------------------------------------------------------+
| **Output type** | Projected coordinates |
+---------------------+----------------------------------------------------------+
.. figure:: ./images/sinu.png
:width: 500 px
:align: center
:alt: Sinusoidal (Sanson-Flamsteed)
proj-string: ``+proj=sinu``
MacBryde and Thomas developed generalized formulas for several of the
pseudocylindricals with sinusoidal meridians:
.. math::
x = C\lambda(m+cos\theta) / ( m + 1)
.. math::
y = C\theta
.. math::
C = \sqrt { (m + 1 ) / n }
Parameters
################################################################################
.. note:: All parameters are optional for the Sinusoidal projection.
.. include:: ../options/lon_0.rst
.. include:: ../options/R.rst
.. include:: ../options/x_0.rst
.. include:: ../options/y_0.rst
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