Ford Diagram — plot_ford • tabula

Plots a Ford (battleship curve) diagram.

Usage

plot_ford(object, ...)

# S4 method for matrix
plot_ford(object, EPPM = FALSE)

# S4 method for data.frame
plot_ford(object, EPPM = FALSE)

Arguments

object: A \(m \times p\) numeric matrix or data.frame of count data (absolute frequencies giving the number of individuals for each class).
...: Currently not used.
EPPM: A logical scalar: should the EPPM be drawn? This argument is defunct: use seriograph() instead.

Value

A ggplot2::ggplot object.

References

Ford, J. A. (1962). A quantitative method for deriving cultural chronology. Washington, DC: Pan American Union. Technical manual 1.

See also

Other plot methods: matrigraph(), plot_bertin(), plot_diceleraas(), plot_diversity, plot_heatmap(), plot_rank(), plot_spot(), seriograph()

Author

N. Frerebeau

Examples

## Data from Desachy 2004
data("compiegne", package = "folio")

## Plot a Ford diagram
plot_ford(compiegne)