randomCoordinates: Random or regularly distributed coordinates on the globe
In geosphere: Spherical Trigonometry
View source: R/randomCoordinates.R
randomCoordinates R Documentation
Random or regularly distributed coordinates on the globe
Description
randomCoordinates returns a 'uniform random sample' in the sense that the probability that a point is drawn from any region is equal to the area of that region divided by the area of the entire sphere. This would not happen if you took a random uniform sample of longitude and latitude, as the sample would be biased towards the poles.
regularCoordiaates returns a set of coordinates that are regularly distributed on the globe.
Usage
randomCoordinates(n)
regularCoordinates(N)
Arguments
n
Sample size (number of points (coordinate pairs))
N
Number of 'parts' in which the earth is subdived )
Value
Matrix of lon/lat coordiantes
Author(s)
Robert Hijmans, based on code by Nils Haeck (regularCoordinates) and on suggstions by Michael Orion (randomCoordinates)
Examples
randomCoordinates(3)
regularCoordinates(1)
geosphere documentation built on Nov. 16, 2022, 1:06 a.m.
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View source: R/randomCoordinates.R
| randomCoordinates | R Documentation |
Random or regularly distributed coordinates on the globe
Description
randomCoordinates returns a 'uniform random sample' in the sense that the probability that a point is drawn from any region is equal to the area of that region divided by the area of the entire sphere. This would not happen if you took a random uniform sample of longitude and latitude, as the sample would be biased towards the poles.
regularCoordiaates returns a set of coordinates that are regularly distributed on the globe.
Usage
randomCoordinates(n) regularCoordinates(N)
Arguments
n |
Sample size (number of points (coordinate pairs)) |
N |
Number of 'parts' in which the earth is subdived ) |
Value
Matrix of lon/lat coordiantes
Author(s)
Robert Hijmans, based on code by Nils Haeck (regularCoordinates) and on suggstions by Michael Orion (randomCoordinates)
Examples
randomCoordinates(3) regularCoordinates(1)
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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