Show palettes and colormaps as colored bands
Show palettes as colored bands.
pal.bands( ..., n = 100, labels = NULL, main = NULL, gap = 0.1, sort = "none", show.names = TRUE )
... |
Palettes/colormaps, each of which is either (1) a vectors of colors or (2) a function returning a vector of colors. |
n |
The number of colors to display for palette functions. |
labels |
Labels for palettes |
main |
Title at top of page. |
gap |
Vertical gap between bars, default is 0.1 |
sort |
If sort="none", palettes are not sorted. If sort="hue", palettes are sorted by hue. If sort="luminance", palettes are sorted by luminance. |
show.names |
If TRUE, show color names |
What to look for:
1. A good discrete palette has distinct colors.
2. A good continuous colormap does not show boundaries between colors.
For example, the rainbow() palette is poor, showing bright lines at
yellow, cyan, pink.
pal.bands(c('red','white','blue'), rainbow)
op=par(mar=c(0,5,3,1))
pal.bands(cubehelix, gnuplot, jet, tol.rainbow, inferno,
magma, plasma, viridis, parula, n=200, gap=.05)
par(op)
# Examples of sorting
labs=c('alphabet','alphabet2', 'glasbey','kelly','polychrome', 'watlington')
op=par(mar=c(0,5,3,1))
pal.bands(alphabet(), alphabet2(), glasbey(), kelly(),
polychrome(), watlington(), sort="hue",
labels=labs, main="sorted by hue")
par(op)
pal.bands(alphabet(), alphabet2(), glasbey(), kelly(),
polychrome(), watlington(), sort="luminance",
labels=labs, main="sorted by luminance")Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.