createColorPalette: Create a color palette.

In wStockhausen/wtsPlotUtils: Utility functions for creating plots.

Description

Creates a color palette (or returns a pre-defined one).

Usage

createColorPalette(name, n = 1, alpha = 1, start = 0, end = max(1, n -
  1)/n, gamma = 1, s = 1, v = 1, bias = 1, space = c("rgb", "Lab"),
  interpolate = c("linear", "spline"), clrs = c("#00007F", "blue",
  "#007FFF", "cyan", "#7FFF7F", "yellow", "#FF7F00", "red", "#7F0000"),
  showAsWheel = FALSE, showAsBar = FALSE)

Arguments

name	- name of base palette to use (pre-defined: 'rainbow','heat','topo', 'cm', and 'jet'; 'ramp' for new palette)
n	- number of colors to include in palette
alpha	- transparency (0-1)
start	- value associated with 1st color in palette
end	- value associated with last color in palette
s	- parameter passed to "rainbow" function
v	- parameter passed to "rainbow" function
bias	- ??
space	- colorspace ('rgb' or 'Lab')
interpolate	- interpolation scheme ('linear' or 'spline')
clrs	- vector of colors defining base palette
showAsWheel	- flag (T/F) to show the final palette as a colorwheel
showAsBar	- flag (T/F) to show final palette as a colorbar

Details

New (interpolated) palettes can be created based on the following pre-defined palettes:
'rainbow', 'heat', 'topo', 'cm', and 'jet'
Specifying a pre-defined palette eliminates the need to specify the 'clrs' color vector.
Palettes can created based on arbitrary base palettes by specifying name as 'ramp' and providing a vector of colors to use as the base palette (via clrs). This appraoch uses the grpahics function "colorRampPalette" to create the palette.

Value

a color palette

wStockhausen/wtsPlotUtils documentation built on May 3, 2019, 7:37 p.m.