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.. _lagrng:
********************************************************************************
Lagrange
********************************************************************************
+---------------------+----------------------------------------------------------+
| **Classification** | Miscellaneous |
+---------------------+----------------------------------------------------------+
| **Available forms** | Forward and inverse, spherical and ellipsoidal |
+---------------------+----------------------------------------------------------+
| **Defined area** | Global |
+---------------------+----------------------------------------------------------+
| **Alias** | lagrng |
+---------------------+----------------------------------------------------------+
| **Domain** | 2D |
+---------------------+----------------------------------------------------------+
| **Input type** | Geodetic coordinates |
+---------------------+----------------------------------------------------------+
| **Output type** | Projected coordinates |
+---------------------+----------------------------------------------------------+
.. figure:: ./images/lagrng.png
:width: 500 px
:align: center
:alt: Lagrange
proj-string: ``+proj=lagrng``
Parameters
################################################################################
.. note:: All parameters are optional for the projection.
.. option:: +W=<value>
The factor :option:`+W` is the ratio of the difference in longitude from the
central meridian to the a circular meridian to 90. :option:`+W` must be a
positive value.
*Defaults to 2.0*
.. include:: ../options/lon_0.rst
.. include:: ../options/lat_1.rst
.. include:: ../options/ellps.rst
.. include:: ../options/R.rst
.. include:: ../options/x_0.rst
.. include:: ../options/y_0.rst
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