RFOC: AlongGreat – R documentation

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AlongGreat

Get Points Along Great Circle

Using a Starting LAT-LON, return points along an azimuth

AlongGreat(LON1, LAT1, km1, ang,  EARTHRAD= 6371)

`LON1`	Longitude, point
`LAT1`	Latitude, point
`km1`	Kilometers in direction ang
`ang`	Direction from North
`EARTHRAD`	optional earth radius, default = 6371

Returns LAT-LON points along a great circle, so many kilometers away in a specified direction

LIST:

`lat`	Latitude, destination point
`lon`	Longitude, destination point
`distdeg`	distance in degrees
`distkm`	distance in km

Jonathan M. Lees <jonathan.lees@unc.edu>

london = c(51.53333, -0.08333333)

AlongGreat(london[2], london[1], 450, 56)

Graphics for Spherical Distributions and Earthquake Focal Mechanisms

v3.4-6

GPL (>= 2)

Authors

Jonathan M. Lees [aut, cre], Keehoon Kim [ctb]

Initial release

2018-01-17