Description Usage Arguments Value Author(s) Examples

View source: R/randomCoordinates.R

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.

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`n` |
Sample size (number of points (coordinate pairs)) |

`N` |
Number of 'parts' in which the earth is subdived ) |

Matrix of lon/lat coordiantes

Robert Hijmans, based on code by Nils Haeck (regularCoordinates), http://mathforum.org/kb/message.jspa?messageID=3985660&tstart=0

and suggstions by Michael Orion (randomCoordinates), http://sci.tech-archive.net/Archive/sci.math/2005-09/msg04691.html

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