visColormap: Function to define a colormap

In hfang-bristol/supraHex: supraHex: a supra-hexagonal map for analysing tabular omics data

Description

visColormap is supposed to define a colormap. It returns a function, which will take an integer argument specifying how many colors interpolate the given colormap.

Usage

visColormap(
colormap = c("bwr", "jet", "gbr", "wyr", "br", "yr", "rainbow", "wb",
"heat",
"terrain", "topo", "cm")
)

Arguments

colormap

short name for the colormap. It can also be a function of 'colorRampPalette'

Value

• palette.name: a function that takes an integer argument for generating that number of colors interpolating the given sequence

Note

The input colormap includes:

• "jet": jet colormap

• "bwr": blue-white-red

• "gbr": green-black-red

• "wyr": white-yellow-red

• "br": black-red

• "yr": yellow-red

• "wb": white-black

• "rainbow": rainbow colormap, that is, red-yellow-green-cyan-blue-magenta

• Alternatively, any hyphen-separated HTML color names, e.g. "blue-black-yellow", "royalblue-white-sandybrown", "darkblue-lightblue-lightyellow-darkorange", "darkgreen-white-darkviolet", "darkgreen-lightgreen-lightpink-darkred". A list of standard color names can be found in http://html-color-codes.info/color-names

See Also

visColoralpha

Examples

# 1) define "blue-white-red" colormap
palette.name <- visColormap(colormap="bwr")

# 2) use the return function "palette.name" to generate 10 colors spanning "bwr"
palette.name(10)

hfang-bristol/supraHex documentation built on May 24, 2021, 3:13 p.m.