Skip to contents

Fabio Crameri's Multi-Sequential Colour Schemes for ggplot2 and ggraph

Source: R/scale_colour_crameri.R
scale_crameri_mutlisequential.Rd

Provides multi-sequential colour scales from Fabio Crameri's Scientific colour.

Source

Crameri, F. (2021). Scientific colour maps. Zenodo, v7.0. doi:10.5281/zenodo.4491293

Arguments

...

Arguments passed to ggplot2::continuous_scale().

reverse

A logical scalar. Should the resulting vector of colours be reversed?

range

A length-two numeric vector specifying the fraction of the scheme's colour domain to keep.

midpoint

A length-one numeric vector giving the midpoint (in data value) of the diverging scale. Defaults to 0.

aesthetics

A character string or vector of character strings listing the name(s) of the aesthetic(s) that this scale works with.

Value

A continuous scale.

Details

Available schemes:

  • oleron

  • bukavu

  • fes

Interpolation

If more colours than defined are needed from a given scheme, the colour coordinates are linearly interpolated to provide a continuous version of the scheme.

Note that the default colour for NA can be overridden by passing a value to ggplot2::continuous_scale().

References

Crameri, F. (2018). Geodynamic diagnostics, scientific visualisation and StagLab 3.0. Geosci. Model Dev., 11, 2541-2562. doi:10.5194/gmd-11-2541-2018

Crameri, F., Shephard, G. E. & Heron, P. J. (2020). The misuse of colour in science communication. Nature Communications, 11, 5444. doi:10.1038/s41467-020-19160-7

See also

Other colour-blind safe colour schemes: scale_crameri_cyclic, scale_crameri_diverging, scale_crameri_sequential, scale_okabeito_discrete, scale_tol_discrete, scale_tol_diverging, scale_tol_sequential

Author

N. Frerebeau

Examples

data(volcano)

volcan <- data.frame(
  x = rep(1:ncol(volcano), each = nrow(volcano)),
  y = rep(1:nrow(volcano), times = ncol(volcano)),
  z = as.numeric(volcano)
)

ggplot2::ggplot(volcan, ggplot2::aes(x, y, fill = z)) +
  ggplot2::geom_raster() +
  scale_fill_oleron(midpoint = 125)