Retrieve colors from a registered palette — sc

Fixed qualitative palettes are truncated but never interpolated. Use extend = "generate" to deterministically append colors while preserving all selected registered colors. Continuous palettes preserve their registered anchors at the native length and otherwise interpolate in Lab space. The cyclic d3_rainbow compatibility palette is sampled directly at i / n, so its colors intentionally change when n changes.

Usage

sc_palette(
  palette,
  n = NULL,
  alpha = 1,
  reverse = FALSE,
  selection = c("priority", "source"),
  extend = c("error", "generate"),
  background = c("light", "dark"),
  keep_names = FALSE
)

Arguments

palette: Palette ID. See sc_palette_names().
n: Number of colors; defaults to the registered palette capacity.
alpha: Opacity in (0, 1].
reverse: Reverse the final color sequence.
selection: Use audited "priority" order or exact upstream "source" order.
extend: For qualitative oversubscription, error or generate colors.
background: Background used by deterministic extension.
keep_names: Preserve registered color names when possible.

Value

A character vector of hexadecimal colors.

Examples

sc_palette("okabe_ito", 4)
#> [1] "#E69F00" "#56B4E9" "#009E73" "#F0E442"
sc_palette("chromatic_balance", 9)
#> [1] "#0054A3" "#547BB4" "#8FA3C8" "#C3CBDD" "#F1F1F1" "#E0C5C5" "#CB9596"
#> [8] "#B16466" "#932D33"