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Map Projections

Map Projections are mathematical models used to transform positions on the surface of the earth, which is curved, onto a flat map surface.

 

The Projection utility currently allows the user to define up to 15 projection systems from 24 different projection are continually being added.

The Projection utility is used to perform the following functions:

• define projection systems
• select the projection system to be used for the current Library
• set the input projection system, which is used when importing data into InFoCAD
• set the output projection system, which is used when exporting a Library for use by another computer system
• temporarily display a Library in a different projection system
• reproject a Current Group to a new projection system
• reproject the graphic records of a database to a new projection system
• create a permanent user-defined grid in the Library

As there are many factors involved when defining projection systems, the Projection utility allows the user to define up to 15 systems in a set, which can then be saved by name and retrieved for use in subsequent InFoCAD sessions. The 24 available projections are as follows:

• Geographic
• State Plane
• Lambert Conformal Conic
• Polar Stereographic
• Equidistant Conic
• Stereographic
• Azimuthal Equidistant
• Orthographic
• Sinusoidal
• Miller Cylindrical
• Oblique Mercator (Holine)
• Space Oblique Mercator
• Universal Transverse Mercator
• Albers Conical Equal Area
• Mercator
• Polyconic
• Transverse Mercator (Gauss Krüger)
• Lambert Azimuthal Equal Area
• Gnomonic
• General Vertical Near-Side perspective
• Equirectangular (Plate Carree)Van Der Grinten
• Robinson
• Modified-Stereographic Conformal (Alaska)