addArrows function

Add Arrows to a Plot Using Relative (0:1) Coordinates

Call the arrows function using relative (0:1) coordinates.

addArrows(x1, y1, x2, y2, ...)

Arguments

• x1: x-coordinate (0:1) at base of arrow.
• y1: y-coordinate (0:1) at base of arrow.
• x2: x-coordinate (0:1) at tip of arrow.
• y2: y-coordinate (0:1) at tip of arrow.
• ...: additional parameters for the function arrows.

Details

Lines will be drawn from (x1[i],y1[i]) to (x2[i],y2[i])

Author(s)

Jon T. Schnute, Pacific Biological Station, Fisheries and Oceans Canada , Nanaimo BC

See Also

addLabel, addLegend

Examples

local(envir=.PBSmodEnv,expr={
  oldpar = par(no.readonly=TRUE)
  tt=seq(from=-5,to=5,by=0.01)
  plot(sin(tt), cos(tt)*(1-sin(tt)), type="l")
  addArrows(0.2,0.5,0.8,0.5)
  addArrows(0.8,0.95,0.95,0.55, col="#FF0066")
  par(oldpar)
})