Jeppesen JeppView 3 - Manual (Page 123)

JeppView User's Guide
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2. Click the Projection tab.
3. Choose any projection from the Projection drop-down list. Where additional
parameters are shown, you can accept the default values or enter your own.
4. Click OK.
Chart Projections
The JeppView mapping engine is designed to display all navigation and topographic
information in eight chart projections. Characteristics of the projections are as
follows:
Lambert Conformal Conic — A conic projection commonly used in aeronautical
charts for long distances because a straight line on the map is very close to a great
circle course. Landform distortion is minimal along the defining parallels and
increases with distance from the parallels.
Mercator — A cylindrical projection commonly used for navigation because a
straight course line is also a rhumbline. Landforms are increasingly distorted with
increasing latitude.
Orthographic — A perspective projection. The earth appears as it would if viewed
from a great distance in space. This projection is useful in higher latitudes since the
entire polar landforms can be displayed accurately.
Polyconic — Like the Lambert Conformal, this conic projection is used on some
aviation and nautical charts. Polyconic is included to support raster chart overlay.
Rectangular — The Rectangular is a simple cylindrical projection with the fastest
display time of these projections.
Equidistant Conic — The simplest conic projection, it draws quickly with little
landform distortion along its defining parallels; commonly used for maps of small
countries.
Stereographic — A conformal projection useful for displaying very large areas with
minimal landform distortion at higher latitudes, commonly used in polar regions.
(Equitorial) Gnomonic — A great circle route appears as a straight line, with
increasing distortion toward the edges.
Using Enroute Chart View Filters