Calculates segment classification measures as defined in Endler (1990).
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 columns named 'S1', 'S2', 'S3', 'S4', and, optionally, 'lum', representing a generic 'tetrachromatic' viewer).
Value
A data frame of class colspace
consisting of the following columns:
S1
,S2
,S3
,S4
: the relative reflectance at each of the four segments.LM
,MS
: segment scoresC
,H
,B
: 'chroma', 'hue' (degrees), and 'brightness' in the segment classification space