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Showing content from https://github.com/poissonconsulting/tinter below:

sebdalgarno/tinter: An R package to get tints and shades (and both) of a colour

tinter provides a simple way to generate monochromatic palettes. Easily define:

• palette direction (“shades”, “tints”, or “both”).
• number of colours to generate on either side (steps).
• number of colours to remove from extreme end(s) of palette (e.g. default crop = 1 eliminates black and white).
• darker or lighter output (adjust).

library(tinter)
hex <- "#335CAC"

tinter(hex)
#> [1] "#D6DEEE" "#ADBDDD" "#849DCD" "#5B7CBC" "#335CAC" "#284989" "#1E3767"
#> [8] "#142444" "#0A1222"

tinter(hex, direction = "tints")

tinter(hex, steps = 10, crop = 7)

tinter(hex, steps = 10, crop = 7, adjust = 0.4)

library(ggplot2)
library(sf)

nc <- st_read(system.file(package = "sf", "shape/nc.shp"))

ggplot(data = nc) +
  geom_sf(aes(fill = AREA), colour = "white", lwd = 0.04) +
  # colours from tinter
  scale_fill_gradientn(colours = tinter(hex)) +
  theme_void() +
  coord_sf(datum = NA)

tinter just simplifies a task usually done with grDevices. It’s default is to remove black and white from the palette.

tinter("blue")
#> [1] "#CCCCFF" "#9999FF" "#6666FF" "#3333FF" "#0000FF" "#0000CC" "#000099"
#> [8] "#000065" "#000032"

### ------ is identical to

grDevices::colorRampPalette(colors = c("white", "blue", "black"))(11)[-(c(1, 11))]
#> [1] "#CCCCFF" "#9999FF" "#6565FF" "#3232FF" "#0000FF" "#0000CB" "#000098"
#> [8] "#000065" "#000032"

tinter("blue", direction = "shades")
#> [1] "#0000FF" "#0000CC" "#000099" "#000065" "#000032"

### --- is identical to

grDevices::colorRampPalette(colors = c("blue", "black"))(6)[-6]
#> [1] "#0000FF" "#0000CC" "#000099" "#000065" "#000032"

tinter("blue", crop = 2)
#> [1] "#9999FF" "#6666FF" "#3333FF" "#0000FF" "#0000CC" "#000099" "#000065"

### --- is identical to

grDevices::colorRampPalette(colors = c("white", "blue", "black"))(11)[-(c(1:2, 10:11))]
#> [1] "#9999FF" "#6565FF" "#3232FF" "#0000FF" "#0000CB" "#000098" "#000065"

To install the latest release from CRAN

install.packages("tinter")

To install the developmental version from GitHub

# install.packages("remotes")
remotes::install_github("poissonconsulting/tinter")

Please report any issues.

Pull requests are always welcome.

Please note that the tinter project is released with a Contributor Code of Conduct. By contributing to this project, you agree to abide by its terms.

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