PlotLog: Logarithmic Plot
In DescTools: Tools for Descriptive Statistics

PlotLog

R Documentation

Logarithmic Plot

Description

The base function grid() does not support logarithmic scales very well. Especially when more lines are required, grids have to be created manually. PlotLog creates a plot with at least one logarithmic axis and places a logarithmic grid in the background of the data.

Usage

PlotLog(x, ..., args.grid = NULL, log = "xy")

Arguments

`x`	the coordinates of points in the plot. Alternatively, a single plotting structure, function or any R object with a plot method can be provided.
`...`	the dots are passed on to the function `plot()`.
`args.grid`	a list of arguments for the grid. This contains line type, line width and line color, separately for major gridlines and for minor gridlines. `args.grid=list(lwd=1, lty=3, col="grey85", col.min="grey60")` are used as default. If the argument is set to `NA`, no grid will be plotted.
`log`	a character string which contains "`x`" if the x axis is to be logarithmic, "`y`" if the y axis is to be logarithmic and "`xy`" or "`yx`" if both axes are to be logarithmic.

Value

nothing

Author(s)

Andri Signorell <andri@signorell.net>

Examples

PlotLog(brain ~ body, data=MASS::Animals, log="xy",
        xlim=c(.01, 1e5), ylim=c(.1, 1e4), main="Animal brain/body size",
        pch=21, bg="grey", cex=1.5)

DescTools documentation built on Sept. 26, 2024, 1:07 a.m.