CTTKhexagon3D {colourvision} | R Documentation |

Plots a hexagonal trapezohedron representing Chittka (1992) colour space for tetrachromatic animals (Thery and Casas, 2002).

```
CTTKhexagon3D(x, y, z, s.col = "red", f.col = "black",
vnames = c("E1","E2","E3","E4"), type = "p",
radius = 0.01, add = F, xlab = "", ylab = "", zlab = "",
box = F, axes = F, ylim = c(-1, 1), xlim = c(-1, 1),
zlim = c(-1,1), aspect = T, vectors=F, ...)
```

`x` |
x coordinate of points to be plotted |

`y` |
y coordinate of points to be plotted |

`z` |
z coordinate of points to be plotted |

`s.col` |
Colour to be used for plotted items. See plot3d in the rgl package. |

`f.col` |
Colour of tetrahedron lines. See plot3d in rgl package. |

`vnames` |
Vector names. |

`type` |
see plot3d function in the rgl package. |

`radius` |
see plot3d function in the rgl package. |

`add` |
see plot3d function in the rgl package. |

`xlab` |
see plot3d function in the rgl package. |

`ylab` |
see plot3d function in the rgl package. |

`zlab` |
see plot3d function in the rgl package. |

`box` |
see plot3d function in the rgl package. |

`axes` |
see plot3d function in the rgl package. |

`ylim` |
see plot3d function in the rgl package. |

`xlim` |
see plot3d function in the rgl package. |

`zlim` |
see plot3d function in the rgl package. |

`aspect` |
see plot3d function in the rgl package. |

`vectors` |
Whether vectors representing direction of photoreceptor outputs should be plotted. |

`...` |
Other arguments passed to function plot3d in the rgl package. |

Felipe M. Gawryszewski f.gawry@gmail.com

Chittka, L. 1992. The colour hexagon: a chromaticity diagram based on photoreceptor excitations as a generalized representation of colour opponency. J Comp Physiol A 170, 533-543.

Thery, M., and J. Casas. 2002. Predator and prey views of spider camouflage. Nature 415, 133-133.

[Package *colourvision* version 2.0.4 Index]