axes function

Plot axes

Show direction axes in a map

axes(
  x,
  y,
  angle,
  radius = 0.5,
  arrow.code = 1,
  arrow.length = 0,
  add = FALSE,
  ...
)

Arguments

• x, y: coordinates of points
• angle: Azimuth in degrees
• radius: length of axis
• arrow.code: integer. Kind of arrow head. The default is 1, i.e. no arrow head. See graphics::arrows() for details
• arrow.length: numeric Length of the edges of the arrow head (in inches). (Ignored if arrow.code = 1)
• add: logical. add to existing plot?
• ...: optional arguments passed to graphics::arrows()

Returns

No return value, called for side effects

Examples

data("san_andreas")
axes(san_andreas$lon, san_andreas$lat, san_andreas$azi, add = FALSE)