trans3d

3D to 2D Transformation for Perspective Plots

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

Keywords
dplot
Usage
trans3d(x, y, z, pmat)
Arguments
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 homogeneous 4D coordinates $(x,y,z,t)$; such matrices are returned by persp().
Value

a list with two components
x,y
the projected 2d coordinates of the 3d input (x,y,z).

See Also

persp

Aliases
  • trans3d
Examples
library(grDevices) ## See help(persp) {after attaching the 'graphics' package} ## -----------
Documentation reproduced from package grDevices, version 3.1.2, License: Part of R 3.1.2

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