What is a Lambert Conformal Conic projection used for?
A Lambert conformal conic projection (LCC) is a conic map projection used for aeronautical charts, portions of the State Plane Coordinate System, and many national and regional mapping systems.
Is Lambert projection conformal?
Lambert conformal conic is a conformal map projection. Directions, angles, and shapes are maintained at infinitesimal scale. Distances are accurate only along the standard parallels.
What does Lambert Conformal Conic distort?
The Lambert Conformal Conic projection can use a single latitude line as its point of contact (a tangent line), or the cone can intersect the earth’s surface along two lines, called secants. Along these two lines there is no distortion, but distortion does occur as the distance from the secants increases.
What is a conic map used for?
Conic projections are used for midlatitude zones that have an east–west orientation. Somewhat more complex Conic projections contact the global surface at two locations. These projections are called Secant projections and are defined by two standard parallels.
What type of map is a conic projection?
Like the cylindrical projection, conic map projections have parallels that cross the meridians at right angles with a constant measure of distortion throughout. Conic map projections are designed to be able to be wrapped around a cone on top of a sphere (globe), but aren’t supposed to be geometrically accurate.
What is a Lambert Conformal map?
A Lambert Conformal Conic projection (LCC) is a conic map projection used for aeronautical charts, portions of the State Plane Coordinate System, and many national and regional mapping systems. It is one of seven projections introduced by Johann Heinrich Lambert in 1772.
Is WGS 84 conformal?
WGS 1984 Web Mercator and WGS 1984 Web Mercator (Auxiliary Sphere) use a conformal projection that preserves direction and the shape of data but distorts distance and area. Note that distances are very distorted in the east-west direction, north or south of the Equator.
What is a conic projection best used for?
Distortion at the poles is so extreme that many maps that use conic projections remove the polar regions. Conic projections are typically used for mid-latitude zones with an east–west orientation. They are normally applied only to portions (such as North America or Europe ) of a hemisphere.
What does conic projection mean?
: a projection based on the principle of a hollow cone placed over a sphere so that when the cone is unrolled the line of tangency becomes the central or standard parallel of the region mapped, all parallels being arcs of concentric circles and the meridians being straight lines drawn from the cone’s vertex to the …
What are Robinson projection maps used for?
The Robinson projection is unique. Its primary purpose is to create visually appealing maps of the entire world. It is a compromise projection; it does not eliminate any type of distortion, but it keeps the levels of all types of distortion relatively low over most of the map.
What are the 3 main families of map projection?
Unwrapping the Sphere to a Plane Map projections are based on developable surfaces, and the three traditional families consist of cylinders, cones, and planes. They are used to classify the majority of projections, including some that are not analytically (geometrically) constructed.
What is a Lambert conformal conic map?
Aeronautical chart on Lambert conformal conic projection with standard parallels at 33°N and 45°N°. A Lambert conformal conic projection (LCC) is a conic map projection used for aeronautical charts, portions of the State Plane Coordinate System, and many national and regional mapping systems.
What is Lambert conic equal area projection?
Lambert Conformal Conic. Description. This projection is one of the best for middle latitudes. It is similar to the Albers conic equal area projection except that Lambert conformal conic portrays shape more accurately than area. The State Plane Coordinate System uses this projection for all zones that have a greater east–west extent.
What is a conformal conic projection?
Lambert conformal conic is a conic projection. All the meridians are equally spaced straight lines converging to a common point, which is the nearest pole to the standard parallels. The parallels are represented as circular arcs centered on the pole. Their spacing increases away from the standard parallels.
Is the Lambert conformal conic projection available in ArcGIS Pro?
It is available in ArcGIS Pro 1.0 and later and in ArcGIS Desktop 8.0 and later. The Lambert conformal conic projection is shown with standard parallels on the northern hemisphere (left) and southern hemisphere (right). The subsections below describe the Lambert conformal conic projection properties.
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