nrennie/prettycols

R package containing pretty colour palettes.

PrettyCols

{PrettyCols} is an R package containing aesthetically pleasing colour palettes.

The structure of the package is based on code from the {PNWColors}, {wesanderson}, and {MetBrewer} packages.

Installation

{PrettyCols} is available on CRAN. Install using:

install.packages("PrettyCols")

or install the development version from GitHub:

remotes::install_github("nrennie/PrettyCols")

See nrennie.rbind.io/PrettyCols for full documentation.

If you have a suggestion of an additional feature, or find a bug, please file an issue on the GitHub repository.

Using {PrettyCols} with other software.

• A Python implementation of this package can be found at github.com/nrennie/PrettyPyCols.

• QGIS users can use {PrettyCols} through QGIS Style at plugins.qgis.org/styles/192. Thanks to @Heed725 for the implementation!

Contributor guidelines

If you'd like to contribute to {PrettyCols}, I'd welcome your help. If you're making a PR, please follow the guidelines below, to make the collaboration easier:

• You have updated the NEWS and version number in DESCRIPTION.
• You have checked that R CMD check passes with no ERRORs or WARNINGs. If there is a NOTE - please outline what it is in the PR.
• You have checked that lintr::lint_package() passes.
• You have checked the list of packages in Imports is still in alphabetical order to enable better tracking of dependencies as the package grows.
• You have not used the base R |> pipe (we're not quite ready to specify R 4.1 or higher as a dependency yet!).
• If this is a feature request PR (not a bug fix) please make sure it relates to an issue that has not been assigned to someone else (and tag the issue in the PR description).

If these checks fail, and there is no response from the PR author for 1 month, the PR will be automatically closed.

prettycols's Issues

Filter by colourblind friendly palettes

• check if all palettes are colourblind friendly
• allow view_all_palettes() to filter by whether palettes are colourblind friendly

Allow multiple selection of palette types

Allow passing of a vector into view_all_palettes() type argument e.g. view_all_palettes(type = c("seq", "div"))

Fix warnings from `scale_name()`

Issue raised in description of #16 (due to changes in 3.5.0)

name is name of scale

Small issue, in PrettyCols::scale_* the name argument is the name of the palette, but name is also in continuous_ or discrete_scale the name of the scale, causing an issue. Easy solution rename name to palette ?

Remove dependency on {purrr}

Issue related to PR #16

Duplicate palette name `Sea`

Can't update legend title using name argument

Since name is used to identify palette in scale_*_pretty_*() it can't be used to change the legend title.

Solution: use something like guides(fill = guide_legend(title = "New Legend Title")) in the meantime. e.g.

ggplot(mtcars, 
       aes(mpg, cyl, colour = disp)) +
  geom_point(size = 3) +
  scale_colour_pretty_c(name = "Greens", limits = c(0, 500), 
                        breaks = c(0, 250, 500), 
                        labels = c("low", "medium", "high")) +
  guides(colour = guide_colorbar(title = "New Legend Title"))

Long-term solutions options: use palette instead of name as argument. Alternatively, add a new argument specifically for the title.

Add support for diverging scales

Create a version of scale_colour_gradient2() for diverging palettes, that takes a specified input value.

Contribution For PrettyCols to appear and Function in QGIS

Hello Nicola ,

So i kinda continued and crafted an xml file basing on prettycols library which can be added into qgis as shown below gif

I was hoping to show you so as i can be able to contribute it further to qgis style with credit of course so as people inn qgis could access it

Release PrettyCols 1.1.0

Prepare for release:

• git pull
• Check current CRAN check results
• Check if any deprecation processes should be advanced, as described in Gradual deprecation
• Polish NEWS
• usethis::use_github_links()
• urlchecker::url_check()
• devtools::check(remote = TRUE, manual = TRUE)
• devtools::check_win_devel()
• revdepcheck::revdep_check(num_workers = 4)
• Update cran-comments.md
• git push
• Draft blog post

Submit to CRAN:

• usethis::use_version('minor')
• devtools::submit_cran()
• Approve email

Wait for CRAN...

• Accepted 🎉
• usethis::use_github_release()
• usethis::use_dev_version(push = TRUE)
• Finish & publish blog post

Add function to view all palettes

Add view_all_palettes() to show all palettes. Should have a type argument to filter by "qual", "seq", "div", "all".