glyphplot (x) draws each observation (row) of the n-by-p matrix x as a star glyph, arranged on a grid. The p spokes of each star radiate from its center at equally spaced angles, with lengths proportional to the values of the p variables; the tips of the spokes are joined to form the star perimeter.

The following name/value pairs are accepted:

"Glyph"

"star" (default) draws star glyphs. "face" (Chernoff faces) is not currently supported.

"Standardize"

How the columns of x are scaled to spoke lengths: "column" (default) scales each column to the range $[0,1]$, "matrix" scales the whole matrix to $[0,1]$, "PCA" uses principal component scores scaled to $[0,1]$, and "off" uses the values as given. A spoke of relative length 0 is still drawn at 10% of the maximum radius so that it remains visible.

"Grid"

A two-element vector [rows cols] specifying the layout of the glyphs. The default is chosen automatically.

"Centers"

An n-by-2 matrix giving the center coordinates of the glyphs explicitly, overriding "Grid".

"Radius"

The maximum glyph radius (default 0.4).

"ObsLabels"

A character array or cell array of strings labeling the observations. The default is the observation numbers.

The optional output g is an n-by-3 matrix of handles whose columns hold, respectively, the star perimeters, the star spokes, and the text labels.

See also: andrewsplot, parallelcoords

Source Code: glyphplot