Calculates segment classification measures as defined in Endler (1990).
Usage
segspace(vismodeldata)
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 scores
C, H, B: 'chroma', 'hue' (degrees), and 'brightness' in the segment classification space
References
Endler, J. A. (1990) On the measurement and classification of
color in studies of animal color patterns. Biological Journal of the Linnean
Society, 41, 315-352.
# NOT RUN {data(sicalis)
vis.sic <- vismodel(sicalis, visual = 'segment', achromatic = 'all')
seg.sic <- colspace(vis.sic, space = 'segment')
# }# NOT RUN {# }