mercator

0th

Percentile

Mercator projection

Transform longitude/latiude points to the Mercator projection. The main purpose of this function is to compute centroids, and to illustrate rhumb lines in the vignette.

Keywords
spatial
Usage
mercator(p, inverse=FALSE, r=6378137)
Arguments
p
longitude/latitude of point(s). Can be a vector of two numbers, a matrix of 2 columns (first one is longitude, second is latitude) or a SpatialPoints* object
inverse
Logical. If TRUE, do the inverse projection (from Mercator to longitude/latitude
r
Numeric. Radius of the earth; default = 6378137 m
Value

  • matrix

Aliases
  • mercator
Examples
a = mercator(c(5,52))
a
mercator(a, inverse=TRUE)
Documentation reproduced from package geosphere, version 1.2-15, License: GPL

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