Access the package's named colour palettes

Returns one of the curated colour vectors that every chart in the package draws from. Useful when extending an autoplot() chart with your own layers and you want them to match the rest of the package's visual identity.

Usage

shewhart_palette(
  name = c("phase_seq", "family", "signal", "neutral"),
  n = NULL
)

Arguments

name

One of "phase_seq", "family", "signal", "neutral". See Details for the contents and intended use of each.

n

Optional integer. Number of colours to return. If NULL (default) the full palette is returned. If n exceeds the palette length, a smooth ramp (grDevices::colorRampPalette()) is interpolated.

Value

A character vector of colour hex codes; for family and signal, the vector is named.

Details

phase_seq

Sequential palette for time-ordered phase indices in regression / multi-phase charts. Cool blues at the baseline, warming through neutral to terracotta as phase index grows. Avoids saturated red (reserved for signal).

family

Named categorical palette for the four chart families: variables, attributes, memory-based, multivariate. Identical to the colours used in the architecture diagram.

signal

Two-colour palette: in_control (deep blue) and out_of_control (firebrick). Used to colour violation points on every chart so the alarm signal is consistent.

neutral

Structural greys used by shewhart_theme() for backgrounds, gridlines and text colour.

Examples

shewhart_palette("phase_seq", n = 4)
#> [1] "#0F4C81" "#2A6BA0" "#4F8DBE" "#7AAFD3"
shewhart_palette("family")["multivariate"]
#> multivariate 
#>    "#7030A0" 
shewhart_palette("signal")
#>     in_control out_of_control 
#>      "#1F4068"      "#C3423F"