Add a background color to a plot

Displays a colored rectangle over the entire area of a plot

Usage

plot_bg(col="lightgray")

Arguments

col

The color of the background

Details

plot_bg is probably only useful when part of the do.first argument in another plot function to add a background color to the plot.

Value

nil

Author

Jim Lemon

Examples

 barp(1:5,do.first="plot_bg()",col=1:5)