| 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}
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