ellipsoidal Lambert conformal conic

Gauss conformal conic

Boole

Aspects of: Lambert conformal conic

Parameters: Latitude of origin, Standard parallel 1, Standard parallel 2

Description

The ellipsoidal form of the Lambert conformal conic projection. Two parallels can be designated to have the same scale, with that scale being deemed true scale.

Classifications

conic
conformal

Graticule

Meridians: Straight lines, infinite in extent in a full world projection.
Parallels: Arcs of circles.
Poles: One is a point; one is at an infinite distance.

Parameters

Latitude of origin: The latitude at which the central meridian is deemed to have a value of (0, 0). This setting has non visible effect; its purpose is to yield plane coordinates that match other sources.
Standard parallel 1: Parallel along which scale is to be correct.
Standard parallel 2: Parallel along which scale is to be correct.

Usage

The Lambert conformal conic is used extensively in aeronautical charts and in national mapping systems. It excels at low-distortion portrayals of regions of long east-west extent. Optimizing the projection for the space is complicated, but a useful rule is to place the standard parallels ⅙th the way in from the maximum north-south extent of the map.

Origin

Johann Heinrich Lambert presented the projection in 1772.

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