add_arrow: Add arrow to chess board visualisation

In cj-holmes/ggambit: Visualise FEN chess positions

Description

Add arrow to chess board visualisation

Usage

add_arrow(
  start,
  end,
  arrow_style = grid::arrow(),
  size = 1.5,
  col = "blue",
  ...
)

Arguments

start	start square for arrow as character (example: "e2")
end	end square for arrow as character (example: "e4")
arrow_style	an arrow specified by grid::arrow()
size	arrow size (line thickness)
col	arrow colour
...	further arguments passed to ggplot2::geom_segment()

Value

A ggplot2 geom_segment() layer

cj-holmes/ggambit documentation built on July 22, 2021, 12:56 p.m.