azimuthal.equidistant: Azimuthal equidistant projection

Description Usage Arguments Value Note Author(s) References

View source: R/projections.R

Description

Azimuthal equidistant projection

Usage

1

Arguments

r

2-column Matrix of spherical coordinates of points on sphere. Column names are phi and lambda.

...

Arguments not used by this projection.

Value

2-column Matrix of Cartesian coordinates of points on polar projection. Column names should be x and y.

Note

This is a special case with the point centred on the projection being the South Pole. The MathWorld equations are for the more general case.

Author(s)

David Sterratt

References

http://en.wikipedia.org/wiki/Map_projection, http://mathworld.wolfram.com/AzimuthalEquidistantProjection.html


retistruct documentation built on April 4, 2020, 5:08 p.m.