dot-addLegend: Add a Legend to a Plot

In bryanhanson/ChemoSpecUtils: Functions Supporting Packages ChemoSpec and ChemoSpec2D

Add a Legend to a Plot

Description

Internal function. Add a legend to a plot created by either ChemoSpec or ChemoSpec2D. ChemoSpec2D does not use symbols.

Usage

.addLegend(spectra, leg.loc, use.sym, ...)

Arguments

spectra	An object of S3 class ChemoSpec::Spectra() or ChemoSpec2D::Spectra2D().
leg.loc	Either a list with elements x and y, or a string like 'topright'. Values in a list should be on ⁠[0,1]⁠, i.e. the lower left of the plot area is ⁠0,0⁠ and the upper right is ⁠1,1⁠. Allowed string values are those described in graphics::legend() under 'Details'. A value of 'none' is acceptable as well.
use.sym	Logical; if true, the color scheme is set to black and the points plotted with symbols. Applies only to ChemoSpec.
...	Parameters to be passed to the plotting routines. Applies to base graphics only.

Value

None. Side effect is to modify an existing plot.

Author(s)

Bryan A. Hanson (DePauw University).

bryanhanson/ChemoSpecUtils documentation built on Feb. 6, 2024, 6:40 a.m.