RgoogleMaps (version 1.4.3)

degreeAxis: axis with degrees

Description

add an axis with degree labels

Usage

degreeAxis(side, at = NULL, 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

Examples

# NOT RUN {

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))


# }