gradient.legend: Create a gradiented legend

In fifer: A Biostatisticians Toolbox for Various Activities, Including Plotting, Data Cleanup, and Data Analysis

Description

Create a gradiented legend

Usage

gradient.legend(y = NULL, yrange = NULL, cols = c("red", "blue"),
  location = c(0.075, 0.3, 0.575, 0.975), n = 100, ...)

Arguments

y	the variable used to create the gradient, typically in number.to.colors
yrange	The range of y values. If y is supplied, it will pulls these from the actual y values.
cols	The color gradients to be used that are passed to colorRampPalette.
location	The location of the subplot, expressed in fractions of the entire plot (left x, right x, bottom y, top y).
n	the number of values used for the gradient. Higher numbers make a higher resolution
...	other arguments passed to image

Author(s)

Dustin Fife

See Also

number.to.colors colorRampPalette

Examples

y = rnorm(100); x = .6*y + rnorm(100,0,sqrt(1-.6^2))
randnum = runif(100)
plot(x,y, col=number.to.colors(randnum), pch=16)
gradient.legend(randnum, xlab="", ylab="")

fifer documentation built on May 30, 2017, 7:40 a.m.