horizon: Distance to the horizon
In geosphere: Spherical Trigonometry
horizon R Documentation
Distance to the horizon
Description
Empirical function to compute the distance to the horizon from a given altitude. The earth is assumed to be smooth, i.e. mountains and other obstacles are ignored.
Usage
horizon(h, r=6378137)
Arguments
h
altitude, numeric >= 0. Should have the same unit as r
r
radius of the earth; default value is 6378137 m
Value
Distance in units of h (default is meters)
Author(s)
Robert J. Hijmans
References
https://www.edwilliams.org/avform147.htm#Horizon
Bowditch, 1995. American Practical Navigator. Table 12.
Examples
horizon(1.80) # me
horizon(324) # Eiffel tower
geosphere documentation built on Nov. 16, 2022, 1:06 a.m.
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| horizon | R Documentation |
Distance to the horizon
Description
Empirical function to compute the distance to the horizon from a given altitude. The earth is assumed to be smooth, i.e. mountains and other obstacles are ignored.
Usage
horizon(h, r=6378137)
Arguments
h |
altitude, numeric >= 0. Should have the same unit as r |
r |
radius of the earth; default value is 6378137 m |
Value
Distance in units of h (default is meters)
Author(s)
Robert J. Hijmans
References
https://www.edwilliams.org/avform147.htm#Horizon
Bowditch, 1995. American Practical Navigator. Table 12.
Examples
horizon(1.80) # me horizon(324) # Eiffel tower
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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