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Create tick marks at the cardinal directions.

Source: R/circular_plotting.R
add_ticks.Rd

Generates a `geom_segment()` layer containing small tick marks at north, south, east, and west. The layer can be added to any ggplot.

Usage

add_ticks(colour = "black")

Arguments

colour

Tick colour. Default `"black"`.

Value

A `geom_segment()` layer.

Examples

library(ggplot2)
ggplot() +
  coord_fixed() +
  add_ticks()