peeledHull: peeledHull

In prettyGraphs: Publication-Quality Graphics

Description

Computes and plots a peeled hull around a set of points onto a current graphics device.

Usage

peeledHull(data_matrix, x_axis = 1, y_axis = 2, percentage = 1, 
	col = "black", lwd = 3, lty = 1)

Arguments

data_matrix	A set of data you would like to plot on 2 dimensions (e.g., a scatter plot). Can be original data or factor scores or anything with at least 2 columns.
x_axis	Which axis is the x-axis? Default is 1.
y_axis	Which axis is the y-axis? Default is 2.
percentage	The percentage of points that should be enveloped by the hull.
col	The color of the hull (see col in plot()).
lwd	The thickness of the hull line (see lwd in plot())
lty	The line type (see lty in plot()).

Note

The code for this function was (barely) adapted from Michael Greenacre's book on correspondence analysis. All credit for this code should go to Michael Greenacre; I only turned it into a function. The original code can be found at http://carme-n.org/?sec=code2

Author(s)

Derek Beaton turned Michael Greenacre's code into a function.

References

Greenacre, M. J. (2007). Correspondence Analysis in Practice. Chapman and Hall.

prettyGraphs documentation built on May 1, 2019, 9:25 p.m.