Does nothing but provide defaults for documentation
arrow_head_default(
rotate = 0,
rescale = c(1, 1),
nudge = c(0, 0),
transformations = c("unitizer", "rotater", "rescaler", "nudger"),
n = 100,
plot = FALSE
)a matrix
rotation angle in radians
a single value or 2-length vector for scaling in x and y
a single value or 2-length vector for nudging in x and y
a vector of transformation functions
number of points in polygon
plot arrowhead if TRUE