Draws a filled triangular arrow head at the specified position.
draw_arrow_base(
x,
y,
angle,
size,
arrow_angle = pi/6,
col = "black",
border = NULL,
lwd = 1
)Arrow tip x coordinate.
Arrow tip y coordinate.
Angle of incoming edge (radians).
Arrow size in user coordinates.
Arrow head angle in radians. Default pi/6 (30 degrees).
Arrow fill color.
Arrow border color (default same as fill).
Border line width.