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tinter

lifecycle Travis build status AppVeyor build status Coverage status License: MIT CRAN status CRAN Downloads

Introduction

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

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)

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

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

Create a choropleth map

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)

Doesn’t this already exist?

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"

Installation

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")

To install the latest developmental release from the Poisson drat repository

# install.packages("drat")
drat::addRepo("poissonconsulting")
install.packages("tinter")

Contribution

Please report any issues.

Pull requests are always welcome.

Please note that this project is released with a Contributor Code of Conduct. By participating in this project you agree to abide by its terms.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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