pirateIcon <- makeIcon(
  iconUrl = "pirate.png",
  iconWidth = 32,
  iconHeight = 32,
  iconAnchorX = 16,
  iconAnchorY = 31,
  shadowUrl = "pirate-ombre.png",
  shadowWidth = 64,
  shadowHeight = 64,
  shadowAnchorX = 32,
  shadowAnchorY = 62
)