Description
This pseudo cylindrical equal-area projection is primarily used for thematic maps of the world.
Projection method
Pseudo cylindrical equal-area projection.
Lines of contact
Many lines; all parallels of latitude in the projection.
Linear graticules
The central meridian is a straight line 0.45 times the length of the equator. Meridians are equally spaced curves. Parallels are unequally spaced, straight parallel lines perpendicular to the central meridian. Their spacing decreases gradually as they move away from the equator.
Properties
Shape
Generally distorted.
Area
Equal area.
Direction
Direction is generally distorted.
Distance
Scale is true along the equator. Scale is also constant along any given latitude and is symmetrical around the equator.
Limitations
Useful only as a world map.
Uses and applications
Thematic world maps. The McBryde–Thomas flat-polar quartic projection is based on this projection.
Learn more about the McBryde-Thomas flat-polar quartic projection
Parameters
Desktop
- False Easting
- False Northing
- Central Meridian