Plot segments correctly when crossing the antimeridian

A substitute to segments which correctly draws segments between locations distant by more than 90 degrees of longitude (i.e. from one hemisphere to the other). It is used instead of segments, but it is slower.

Usage

geo.segments(
  x0,
  y0,
  x1,
  y1,
  col = graphics::par("fg"),
  lty = graphics::par("lty"),
  lwd = graphics::par("lwd"),
  ...
)

Arguments

x0, y0

coordinates of points from which to draw.

x1, y1

coordinates of points to which to draw.

col

a character string or an integer indicating the color of the segments.

lty

a character string or an integer indicating the type of line.

lwd

an integer indicating the line width.

...

further graphical parameters (from 'par') passed to the segments function.

Value

NULL.

Details

This low-level function is designed to be called by other procedures of geoGraph. However, it can sometimes be useful by itself. Note that unlike other functions in geoGraph, this functions does not test for the validity of the provided arguments (for speed purposes).

Examples

plot(worldgraph.10k, reset = TRUE)
#> Spherical geometry (s2) switched off
#> Spherical geometry (s2) switched on
geo.segments(x0 = -170, y0 = 60, x1 = 170, y1 = 55, col = "red", lwd = 2)