Legend Key — LegendKey • SeqPlotR

Constructs a single legend key entry for a SeqPlotR element. A LegendKey records the visual properties (colour, shape, fill, etc.), the display label, and an optional group title for one row in a rendered legend.

Usage

LegendKey(
  label = NULL,
  title = NULL,
  color = "#1C1B1A",
  shape = "-",
  size = 1,
  alpha = 1,
  fill = NULL,
  lty = 1,
  ...
)

Arguments

label: Character or NULL. Text label shown beside the key glyph.
title: Character or NULL. Legend group title this key belongs to.
color: Character. Stroke / point colour. Default "#1C1B1A".
shape: Character. Glyph shape code (e.g. "-", "circle"). Default "-".
size: Numeric. Relative glyph size. Default 1.
alpha: Numeric in [0, 1]. Opacity. Default 1.
fill: Character or NULL. Fill colour for filled glyphs. Default NULL.
lty: Integer or character. Line type. Default 1.
...: Additional fields stored verbatim in the extra sub-list.

Value

A LegendKey S3 object (a named list with class "LegendKey").