Peirce quincuncial projection: interactive map

Peirce quincuncial projection at a glance

Distortion class

Conformal

Graticule type

Square

Creator

Charles Sanders Peirce

Year

1879

Area

Highly distorted: grows from the center of the square outward and peaks at the middle of the four sides, where conformality fails

Shape

Preserved locally (conformal), except at four points in the middle of the square's sides

Distances

Highly distorted

Angles and directions

Preserved locally, except at four points in the middle of the square's sides; directions across the globe are not true

Add countries from the tools panel and drag them to other latitudes. The outline keeps its true shape and area on the globe, so any change in its size on the map shows this projection's distortion. Tissot's indicatrices and the area distortion map show the same effect across the whole world.