Proj4js: Is this correct implementation of Azimuthal Equidistant relative to an arbitrary center?

What is the azimuthal equidistant projection used for?

Azimuthal equidistant projection maps can be useful in terrestrial point to point communication. This type of projection allows the operator to easily determine in which direction to point their directional antenna.

What is polar azimuthal equidistant projection?

The Azimuthal Equidistant (Polar Aspect) projection is neither an equal-area nor a conformal projection. The outer meridian of a hemisphere on the equatorial aspect is a circle. Parallels on the polar projection are circles spaced at equidistant intervals. All meridians on the polar aspect are straight lines.

Is azimuthal equidistant conformal?

Conformality: Azimuthal equidistant maps are not conformal, shape distortion is present throughout the map. As with most other forms of distortion, the amount of shape distortion present in an azimuthal equidistant map increases as you get farther from the map’s point of tangency.

What does an azimuthal map show correctly?

Azimuthal. Azimuthal projections are planar projections on which correct directions from the center of the map to any other point location are maintained. The stereographic projection is another example of an azimuthal projection.

What are the projection properties of a azimuthal map?

Azimuthal projections map meridians as straight lines and parallels as complete, concentric circles. They are radially symmetrical. In any presentation (or aspect), they preserve directions from the center point. Great circles through the central point are represented by straight lines on the map.
 

What is an example of azimuthal projections?

Azimuthal projections result from projecting a spherical surface onto a plane. When the plane is tangent to the sphere contact is at a single point on the surface of the Earth. Examples are: Azimuthal Equidistant, Lambert Azimuthal Equal Area, Orthographic, and Stereographic (often used for Polar regions).

What does the azimuthal projection distort?

Azimuthal equal-area projection: Shows angles correctly from a central point but distorts shapes badly at increasing distances from the center. Robinson projection: A frequently used compromise projection to show the entire world with minimal distortion in low and middle latitudes but maximum distortion near the poles.

What is the explanation of azimuthal projection?

An azimuthal projection produces a circular map with a chosen point-the point on the globe that is tangent to the flat surface-at its center. When the central point is either of Earth’s poles, parallels appear as concentric circles on the map and meridians as straight lines radiating from the center.

What is the purpose of azimuthal quantum number?

Azimuthal quantum number describes the shape of the orbital. It is denoted by ℓ. Values of ℓ are from zero to n-1. With the help of the value of the azimuthal quantum number, we can determine the total number of energy sublevels in a given energy level.
 

What is the importance of azimuthal quantum number?

The azimuthal (or orbital angular momentum) quantum number describes the shape of a given orbital. It is denoted by the symbol ‘l’ and its value is equal to the total number of angular nodes in the orbital. A value of the azimuthal quantum number can indicate either an s, p, d, or f subshell which vary in shape.

What is equidistant projection used in GIS?

[map projections] A projection that maintains scale along one or more lines, or from one or two points to all other points on the map. Lines along which scale (distance) is correct are the same proportional length as the lines they reference on the globe.