surveillance: hcl.colors – R documentation

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hcl.colors

HCL-based Heat Colors from the colorspace Package

Description

If package colorspace is available, its heat_hcl function is used to generate a color palette. Otherwise, the similar Heat 2 palette from R's own hcl.colors are used.

This function was exported as hcl.colors in surveillance 1.14.0 - 1.17.0 but is now internal to avoid a name clash with R 3.6.0 (or later), which introduced a function of that name in the base package grDevices.

Usage

.hcl.colors(ncolors = 100, use.color = TRUE)

Arguments

`ncolors`	the number of colors (>= 1) to be in the palette.
`use.color`	logical. Should the palette use colors? Otherwise grey levels are returned.

Value

A character vector of ncolors colors.

Examples

barplot(rep(1,10), col = surveillance:::.hcl.colors(10), axes = FALSE)

surveillance

Temporal and Spatio-Temporal Modeling and Monitoring of Epidemic Phenomena

v1.19.1

GPL-2

Authors

Michael H<f6>hle [aut, ths] (<https://orcid.org/0000-0002-0423-6702>), Sebastian Meyer [aut, cre] (<https://orcid.org/0000-0002-1791-9449>), Michaela Paul [aut], Leonhard Held [ctb, ths], Howard Burkom [ctb], Thais Correa [ctb], Mathias Hofmann [ctb], Christian Lang [ctb], Juliane Manitz [ctb], Andrea Riebler [ctb], Daniel Saban<e9>s Bov<e9> [ctb], Ma<eb>lle Salmon [ctb], Dirk Schumacher [ctb], Stefan Steiner [ctb], Mikko Virtanen [ctb], Wei Wei [ctb], Valentin Wimmer [ctb], R Core Team [ctb] (A few code segments are modified versions of code from base R)

Initial release

2021-03-30