Van der Grinten I
Release 9.2 Last modified August 3, 2007	Print all topics in : "Supported map projections"

Description

This projection is similar to the Mercator projection except that it portrays the world with a curved graticule. The overall effect is that area is distorted less than on a Mercator projection, and the shape is distorted less than on equal-area projections.
Learn about the Mercator projection

Projection method

The Van der Grinten I projection is a compromise projection and is not in one of the more traditional classifications.

Linear graticules

The equator and the central meridian of the projection.

Properties

Shape

Distortion increases from the equator to the poles.

Area

Minimal distortion along the equator and extreme distortion in the polar regions.

Direction

Local angles are correct only at the center.

Distance

Scale along the equator is correct.

Limitations

Can represent the world, but the most accurate representation is between the 75^th parallels of latitude.

Uses and applications

Used for world maps—formerly the standard world map projection of the National Geographic Society.

Parameters

Desktop

• False Easting
  
• False Northing
  
• Central Meridian
  
• Supported on spheres only
  

Workstation

• Radius of the sphere of reference
  
• Longitude of Central Meridian
  
• False Easting (meters)
  
• False Northing (meters)
  
• Supported on spheres only
  

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