mercatorlat {birdring} | R Documentation |
gives the streching factor of the latitude to draw a mercator map
Description
this function is only used internally by the function draw.map
Usage
mercatorlat(x)
Arguments
x |
latitude in decimal coordinates |
Value
numeric: latitude to draw a mercator map
Author(s)
Fraenzi Korner-Nievergelt
References
Rummler, H. (2002) Mercatorkarte und hyperbolische Geometrie. Elem. Math., 57, 168-173.
Examples
mercatorlat(41.6)
[Package birdring version 1.6 Index]