mf_get_pal: Get color palettes

In riatelab/mapsf: Thematic Cartography

Get color palettes

Description

mf_get_pal builds sequential, diverging and qualitative color palettes. Diverging color palettes can be dissymmetric (different number of colors in each of the two gradients).

Usage

mf_get_pal(
  n,
  palette,
  alpha = NULL,
  rev = c(FALSE, FALSE),
  neutral,
  breaks,
  mid
)

Arguments

n	the number of colors (>= 1) to be in the palette
palette	a valid palette name. See hcl.pals to get available palette names. The name is matched to the list of available palettes, ignoring upper vs. lower case, spaces, dashes, etc. in the matching.
alpha	an alpha-transparency level in the range [0,1] (0 means transparent and 1 means opaque)
rev	logical indicating whether the ordering of the colors should be reversed
neutral	a color, if two gradients are used, the 'neutral' color can be added between them
breaks	a vector of class limit
mid	a numeric value use to divide the palette in two colors

Value

A vector of colors.

Examples

cls <- mf_get_pal(n = c(3, 7), palette = c("Reds 2", "Greens"))
plot(1:10, rep(1, 10), bg = cls, pch = 22, cex = 4)
mtq <- mf_get_mtq()
bks <- mf_get_breaks(mtq$MED, breaks = "equal", nbreaks = 8)
pal <- mf_get_pal(
  breaks = bks, mid = 15000,
  palette = c("Dark Mint", "Burg"), neutral = "grey90"
)
mf_map(mtq, "MED", "choro", breaks = bks, pal = pal)
pal <- mf_get_pal(breaks = bks, mid = bks[4], palette = c("Dark Mint", "Burg"))
mf_map(mtq, "MED", "choro", breaks = bks, pal = pal)

riatelab/mapsf documentation built on June 9, 2025, 10:07 p.m.