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Plot a legend independently of a map

plot_legend.Rd

Plot a legend independently of a map

Usage

plot_legend(dataset_legend, path = NULL, horiz = TRUE, add = FALSE)

Arguments

dataset_legend

list of parameters to be passed to legend

path

character, the name of the file to save the plot. Graphical device is chosen depending on extension. See details.

horiz

logical, should the legend be horizontal

add

logical, should the legend be added to the current plot

Value

Nothing useful.

Details

path specification

Depending on the extension a device is chosen.

  • pdf: grDevices::cairo_pdf

  • png: grDevices::png

  • svg: grDevices::svg

If path is NULL, standard plotting is used. If an extension is not managed, an error is raised.

Author

Frédéric Grelot

Examples


dataset_legend = list(
 title = "Beatutiful legend",
 legend = c("red circle", "black square", "blue diamond"),
 pch = 21:23,
 pt.bg = c("red", "black", "blue")
)
plot_legend(dataset_legend)

plot_legend(dataset_legend, horiz = FALSE)