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birdring (version 1.6)

mercatorlat: 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)

Value

numeric: latitude to draw a mercator map

Arguments

x

latitude in decimal coordinates

Author

Fraenzi Korner-Nievergelt

References

Rummler, H. (2002) Mercatorkarte und hyperbolische Geometrie. Elem. Math., 57, 168-173.

Examples

Run this code
mercatorlat(41.6)

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