trans3d {grDevices} | R Documentation |

Projection of 3-dimensional to 2-dimensional points using a 4x4
viewing transformation matrix. Mainly for adding to
perspective plots such as `persp`

.

trans3d(x,y,z, pmat)

`x, y, z` |
numeric vectors of equal length, specifying points in 3D space. |

`pmat` |
a 4 x 4 viewing transformation matrix,
suitable for projecting the 3D coordinates (x,y,z) into the 2D
plane using homogenous 4D coordinates (x,y,z,t);
such matrices are returned by `persp()` . |

a list with two components

`x,y` |
the projected 2d coordinates of the 3d input `(x,y,z)` . |

## See help(persp) {after attaching the 'graphics' package} ## -----------

[Package *grDevices* version 2.2.1 Index]