Description
Cylindric equal-area projection optimized for mid latitudes.
Classifications
cylindric
equal-area
Graticule
Meridians: Straight, evenly spaced, half the length of the parallels.
Parallels: Straight, with variable spacing.
Scale
Scale is correct along 37°4′N/S parallels and constant along all parallels.
Distortion
Free of distortion along the 37°4′N/S parallels and constant along all parallels.
Similar projections
This is a specialization of the cylindric equal-area projection, arranged to have a 2:1 aspect ratio.
Origin
Proposed by Charles Piazzi Smyth, 1870.