Winkel I

Description

Often used for world maps, the Winkel I projection is a pseudo cylindrical projection that averages the coordinates from the equirectangular (equidistant cylindrical) and sinusoidal projections. Developed by Oswald Winkel in 1914.

Illustration of the Winkel I projection

Projection method

Pseudo cylindrical. Coordinates are the average of the sinusoidal and equirectangular projections. Meridians are equally spaced sinusoidal curves curving toward the central meridian. The central meridian is a straight line. Parallels are equally spaced straight lines. The length of the poles and the central meridian depends on the standard parallels. If the standard parallel is the equator, Eckert V results.

Linear graticules

The parallels and the central meridian.

Properties

Shape

Generally distorted.

Area

Generally distorted.

Direction

Generally distorted.

Distance

Generally, scale is made true along latitudes 50°28' N and S.

Limitations

Neither conformal nor equal area. Useful only for world maps.

Uses and applications

Developed for use in general world maps. If the standard parallels are 50°28' N and S, the total area scale is correct, but local area scales vary.

Parameters

Desktop

  • False Easting
  • False Northing
  • Central Meridian
  • Standard Parallel 1
NoteNote:

Supported on spheres only.

geographic_coordinate_systems.pdf

A geographic coordinate systems pdf file which contains lists of supported gcs and vcs.

projected_coordinate_systems.pdf

A projected coordinate systems pdf file which contains lists of supported pcs.

geographic_transformations.pdf

A geographic transformations pdf file which contains lists of supported geographic and vertical transformations.

Related Topics

3/3/2014