Plot the colour opponent coding diagram

Produces a plot based on the colour opponent coding diagram of Backhaus (1991).

cocplot(
  cocdata,
  labels = TRUE,
  labels.cex = 0.9,
  tick.loc = c(-12, -9, -6, -3, 3, 6, 9, 12),
  achro = FALSE,
  achrosize = 0.8,
  achrocol = "grey",
  square = TRUE,
  ...
)

Arguments

cocdata: (required) a data frame, possibly a result from the colspace() or categorical() function, containing values for 'x' and 'y' coordinates as columns (labeled as such).
labels: logical. Should the name of each cone be printed next to the corresponding vertex?
labels.cex: size of the arrow labels.
tick.loc: a numeric vector specifying the location of tick marks on x & y axes.
achro: should a point be plotted at the origin (defaults to TRUE)?
achrosize: size of the point at the origin when achro = TRUE (defaults to 0.8).
achrocol: color of the point at the origin achro = TRUE (defaults to 'grey').
square: logical. Should the aspect ratio of the plot be held to 1:1? (defaults to TRUE).
...: additional graphical options. See par().

References

Backhaus W. (1991). Color opponent coding in the visual system of the honeybee. Vision Research, 31, 1381-1397.

Author

Thomas White thomas.white026@gmail.com

Examples

data(flowers)
vis.flowers <- vismodel(flowers, visual = "apis", qcatch = "Ei", relative = FALSE, vonkries = TRUE)
coc.flowers <- colspace(vis.flowers, space = "coc")
plot(coc.flowers)