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 |

proj-string: +proj=sinu
¶
MacBryde and Thomas developed generalized formulas for several of the pseudocylindricals with sinusoidal meridians:
Parameters¶
Note
All parameters are optional for the Sinusoidal projection.
- +lon_0=<value>¶
Longitude of projection center.
Defaults to 0.0.
Note
The default convention is to interpret this value as decimal degrees. To specify radians instead, follow the value with the "r" character.
Example: +lon_0=1.570796r
See Projection Units for more information.
- +R=<value>¶
Radius of the sphere, given in meters. If used in conjunction with
+ellps
,+R
takes precedence.See Ellipsoid size parameters for more information.
- +x_0=<value>¶
False easting, in meters.
Defaults to 0.0.
- +y_0=<value>¶
False northing, in meters.
Defaults to 0.0.