Discrete position scale

Creates a categorical position scale for axes with discrete levels (e.g., cell types, sample names).

Usage

seq_scale_discrete(
  levels = NULL,
  labels = NULL,
  expand = c(0, 0.5),
  cap = c("capped", "full", "exact", "ticks"),
  oob = c("exclude", "perimeter"),
  pretty = NULL
)

Arguments

levels

Character vector of category levels, in display order. If NULL, levels are auto-detected from element data.

labels

Optional display labels (same length as levels). If NULL, level names are used as labels.

expand

Length-2 c(mul, add) expansion. Default c(0, 0.5) (half a category of padding on each side).

cap

Axis-line cap mode. See seq_scale_continuous().

Value

A SeqScaleDiscrete_Pos / SeqPositionScale object.