.. _sinu:

********************************************************************************
Sinusoidal (Sanson-Flamsteed)
********************************************************************************

.. 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
