Sinusoidal projection

The Sinusoidal projection is an equal-area map web design (pseudo - cylinder figure), which can represent the entire Earth.

The equator and the central meridian are reproduced lengths and angle scattering, with increasing distance from the central meridian but takes the distortion to very strong. Usually taken as the central meridian the prime meridian or the meridian 11 ° 5'30 "East. In the latter, the outer edge of the card goes through the middle of the Bering Strait.

All parallels are shown as straight lines, their length the length of the parallel equivalent. Meridians are represented as sinusoids, the central meridian as a straight line. The central meridian the opposite meridian forms the ( sinusoidal ) outer edge of the map.

The web design is very easy to calculate, but it is not very clear and is therefore rarely used. More illustratively, the Mollweide or the similar-looking hammer Aitov projection, which reflect both the earth's surface as an ellipse.

Formulas

• Down Education:

• Remapping:

• : Easting
• : Northing
• : Radius of the underlying sphere
• : Latitude
• : Longitude
• : Central Meridian ( mean length of the projection)