NVanDerGrintenProjection Class
In This Topic
The van der Grinten projection is neither equal-area nor conformal. It projects the entire Earth into a circle, though the polar regions are subject to extreme distortion.
Object Model
Syntax
'Declaration<System.Xml.Serialization.XmlIncludeAttribute(Nevron.Diagram.Maps.NAitoffProjection)> <System.SerializableAttribute()> Public Class NVanDerGrintenProjection Inherits NMapProjection
'UsageDim instance As NVanDerGrintenProjection
[System.Xml.Serialization.XmlInclude(Nevron.Diagram.Maps.NAitoffProjection)] [System.Serializable()] public class NVanDerGrintenProjection : NMapProjection
Remarks
The projection was the first of four proposed by Alphons J. van der Grinten in 1904, and, unlike most projections, is an arbitrary geometric construction on the plane. It was made famous when the National Geographic Society adopted it as their reference map of the world from 1922 until 1988.
The projection offers pleasant balance of shape and scale distortion. Boundary is a circle; all parallels and meridians are circular arcs (spacing of parallels is arbitrary). No distortion along the standard parallel at the equator. Usually clipped near 80� N/S.
Inheritance Hierarchy
System.Object
Nevron.Diagram.Maps.NMapProjection
Nevron.Diagram.Maps.NVanDerGrintenProjection
Requirements
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
See Also