Show Navigation | Hide Navigation
You are here:
Map projections and coordinate systems > Supported map projections


Release 9.2
Last modified August 3, 2007
E-mail This Topic Printable Version Give Us Feedback

Print all topics in : "Supported map projections"

Related Topics


Karl Siemon created this pseudo cylindrical projection in 1935. This projection was also presented in 1966 by Waldo Tobler. Loxodromes, or rhumb lines, are shown as straight lines with the correct azimuth and scale from the intersection of the central meridian and the central parallel.

Illustration of the Loximuthal projection

Projection method

Pseudo cylindrical. All parallels are straight lines, and all meridians are equally spaced arcs except the central meridian, which is a straight line. The poles are points.

Linear graticules

The parallels and central meridian.



Shape is generally distorted. As the value of the central parallel increases from the equator, the overall shape of the world becomes more distorted.


Generally distorted.


Directions are true only at the intersection of the central meridian and central latitude. Direction is distorted elsewhere.


Scale is true along the central meridian. It is constant along any latitude. The opposite latitude has a different scale if the central parallel isn't the equator.


Useful only to show loxodromes.

Uses and applications

Suitable for displaying loxodromes.



Please visit the Feedback page to comment or give suggestions on ArcGIS Desktop Help.
Copyright © Environmental Systems Research Institute, Inc.