Computes the circular mean direction and resultant length, returning a
`geom_segment()` layer that can be added to an existing ggplot.
Usage
directedness_arrow(
data,
angle_col,
arrow_head_cm = 0.2,
colour = "gray",
size = 2
)
Arguments
- data
Data frame containing the angle column.
- angle_col
Column containing angles in radians.
- arrow_head_cm
Length of the arrowhead in centimetres.
- colour
Colour of the arrow.
- size
Width of the arrow segment (applied to the geom's `linewidth`).
Value
A `geom_segment()` layer.