degreeAxis: axis with degrees

In iNZightVIT/RgoogleMaps: Overlays on Google map tiles in R

Description

add an axis with degree labels

Usage

degreeAxis(side, at, labels, MyMap, ...)

Arguments

side	integer; see axis
at	numeric; if missing, axTicks is called for nice values; see axis
labels	character; if omitted labels are constructed with degree symbols, ending in N/S/E/W; in case of negative degrees, sign is reversed and S or W is added; see axis
MyMap	optional map object to be passed
...	optional arguments to axis

Value

axis is plotted on current graph

Note

decimal degrees are used if variation is small, instead of minutes and seconds

Author(s)

Markus Loecher

Examples

xy = cbind(x = 2 * runif(100) - 1, y = 2 * runif(100) - 1)


plot(xy,xlim=c(-1,1),ylim=c(-1,1))


degreeAxis(1)


degreeAxis(2, at = c(-1,-0.5,0,0.5,1))

iNZightVIT/RgoogleMaps documentation built on May 17, 2019, 10:09 p.m.