pavo (version 2.9.0)

categorical: Categorical fly-visual model

Description

Applies the categorical colour vision model of Troje (1993)

Usage

categorical(vismodeldata)

Value

Object of class colspace consisting of the following columns:

• R7p, R7y, R8p, R8y: the quantum catch data used to calculate the remaining variables.

• x, y: cartesian coordinates in the categorical colour space.

• r.vec: the r vector (saturation, distance from the center).

• h.theta: angle theta (in radians), a continuous measure of stimulus hue.

• category: fly-colour category. One of p-y-, p-y+, p+y-, p+y+.

Arguments

vismodeldata

(required) quantum catch color data. Can be either the result from vismodel() or independently calculated data (in the form of a data frame with four columns named 'u' ,'s', 'm', 'l', representing a tetrachromatic viewer).

Author

Thomas White

References

Troje N. (1993). Spectral categories in the learning behaviour of blowflies. Zeitschrift fur Naturforschung C, 48, 96-96.

Examples

data(flowers)
vis.flowers <- vismodel(flowers, visual = "musca", achromatic = "md.r1")
cat.flowers <- colspace(vis.flowers, space = "categorical")