draw_arrow: Draw arrow on praatpicture plot component
Description
Helper function for drawing arrows on plot components made with
praatpicture. Do not use directly, instead use praatpicture with the
draw_arrow argument.
Usage
draw_arrow(plot_component, args)
Value
No return values, called internally by praatpicture and sibling
functions.
Arguments
plot_component
String giving the name of the plot component to
draw on.
args
A list of vectors giving arguments used for drawing
arrows. See praatpicture documentation.