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khroma 1.12.0

New functions

• Add Paul Tol nightfall and incandescent colour schemes.

Bugfixes & changes

• Fix discreterainbow scheme (qualitative scheme instead of sequential).

khroma 1.11.0

Bugfixes & changes

• Fix ramp() to return a palette function with argument a vector of values that are mapped to colors.

Internals

• Use tinytest and tinysnapshot instead of testthat and vdiffr.

khroma 1.10.0

Bugfixes & changes

• Add Okabe Ito colour scale with black at last position (#12, thanks to @ustervbo).

khroma 1.9.0

New functions

• Add ramp() to produce a colour scheme that map a numeric vector to colours (allow rescaling to a specific midpoint).
• Add scale_*_logical() for logical values.

Bugfixes & changes

• Fix scale_colour_okabeito() and scale_fill_okabeito() (unnamed arguments were passed in the wrong order).

khroma 1.8.0

New functions

• Add plot_tiles() to produce a diagnostic map for a given colour scheme.
• Add scale_*_picker() and scale_edge_*_picker() to build scales for ggplot2 and ggraph.
• Add ggraph scale functions scale_edge_colour_*() and scale_edge_fill_*() (#10).

Bugfixes & changes

• Fix test broken by testthat 3.1.2 (#11, thanks to @hadley).

khroma 1.7.0

New functions

• Add Paul Tol’s high and medium contrast colour schemes: scale_*_mediumcontrast and scale_*_highcontrast (#9).

Bugfixes & changes

• Deprecate scale_*_contrast.

khroma 1.6.0

New functions

• Add info() to get a table of all available palettes.

Internals

• Move ggplot2, scales and spacesXYZ from Imports to Suggests (#8).

khroma 1.5.0

New functions

• Add Fabio Crameri’s Scientific colour schemes (35 new colour schemes).
• Add ggplot2 scale functions:
  • Diverging Colour Schemes: scale_*_broc, scale_*_cork, scale_*_vik, scale_*_lisbon, scale_*_tofino, scale_*_berlin, scale_*_roma, scale_*_bam, scale_*_vanimo.
  • Sequential colour schemes: scale_*_batlow, scale_*_batlowW, scale_*_batlowK, scale_*_devon, scale_*_lajolla, scale_*_bamako, scale_*_davos, scale_*_bilbao, scale_*_nuuk, scale_*_oslo, scale_*_grayC, scale_*_hawaii, scale_*_lapaz, scale_*_tokyo, scale_*_buda, scale_*_acton, scale_*_turku, scale_*_imola.
  • Multi-sequential colour schemes: scale_*_oleron, scale_*_bukavu, scale_*_fes.
  • Cyclic colour schemes: scale_*_brocO, scale_*_corkO, scale_*_vikO, scale_*_romaO, scale_*_bamO.

khroma 1.4.1

Bugfixes & changes

• scale_*_sunset(), scale_*_BuRd() and scale_*_PRGn() gained a new argument to be used with discrete data (#7).
• Fix conflict with the name argument of ggplot2::discrete_scale() and ggplot2::scale_continuous().

khroma 1.4.0

New functions

• Add a compare() function to compute CIELAB distance metric.
• Add a plot() function.
• Add a plot_scheme_colourblind() function (#4, thanks to @vincentarelbundock).
• Add Okabe and Ito (2008) colour scheme.

Bugfixes & changes

• Restrict the RGB values in the anomalize() function (#5, thanks to @vincentarelbundock).
• plot_scheme() now display colour for bad/missing data (if any).
• colour() output can be restricted to a fraction of the cheme’s colour domain (#6).
• colour() gained a new argument to force interpolation of colour scheme.
• colour() gained a new argument to choose colour names language.
• scale_*_YlOrBr(), scale_*_iridescent() and scale_*_smoothrainbow() gained a new argument to be used with discrete data (#3).

Internals

• Move ggplot2 and scales from Suggests to Imports.

khroma 1.3.0

Bugfixes & changes

• Fix qualitative colour picking.
• Fix typos in colour names (#2).
• Remove scale_*_rainbow().
• Use crayon if installed to nicely print colours in the console.

Internals

• Move ggplot2 and scales from Imports to Suggests.

khroma 1.2.0

New functions

• Add the convert() function to simulate colour-blind vision.
• Add the plot_scheme() function to shows colours in a plot.
• Add the plot_map() function to produces a diagnostic map for a given colour scheme.

Bugfixes & changes

• Fix the argument (number of levels) of the palette function returned by colour().

Internals

• Add a vignette for Paul Tol’s colour schemes.

khroma 1.1.3

New functions

• Add three ggplot2 scale functions: scale_*_pale(), scale_*_dark() and scale_*_discreterainbow().

Bugfixes & changes

• The function scale_*_rainbow() is deprecated and replaced by scale_*_discreterainbow().
• Fix the missing attribute of the palette function returned by colour() (bug introduced in v1.1.2).

Internals

• The documentation is expanded with several remarks on the use of Paul Tol’s colour schemes.

khroma 1.1.2

New functions

• Add three ggplot2 scale functions: scale_*_contrast(), scale_*_iridescent() and scale_*_land().

Bugfixes & changes

• Add three colour schemes: Paul Tol’s high contrast (qualitative), iridescent (sequential) and modified colour scheme for the AVHRR global land cover classification.
• Remove scale_*_tol().
• Remove arrange().

khroma 1.1.1

Bugfixes & changes

• Midpoint can be specified in diverging colour scales.
• Colour schemes can be reversed (a bug made the reverse argument inoperative).

Internals

• Reduce required R version to 3.1.

khroma 1.1.0

New functions

• Add specific ggplot2 scale functions for Paul Tol’s colour schemes: scale_*_bright(), scale_*_vibrant(), scale_*_muted(), scale_*_light(), scale_*_rainbow() (qualitative), scale_*_sunset(), scale_*_BuRd(), scale_*_PRGn() (diverging), scale_*_YlOrBr(), scale_*_smoothrainbow() (sequential).

Bugfixes & changes

• The function scale_*_tol() is deprecated.
• Add the FAO Soil Reference Groups colour scheme.

khroma 1.0.0

• First release (initial version on CRAN).

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.