extprod3d

<code>n</code>-by-3 matrix. Each row is one x-vector

<code>n</code>-by-3 matrix. Each row is one y-vector

Computes the external product
 $$\left(x_2 y_3 - x_3 y_2,\; x_3 y_1 - x_1 y_3,\; x_1 y_2 - x_2 y_1 \right)$$
 of the 3D vectors in x and y.

arith

math

array

This package makes the qhull library (www.qhull.org)
        available in R, in a similar manner as in Octave and MATLAB.
        Qhull computes convex hulls, Delaunay triangulations, halfspace
        intersections about a point, Voronoi diagrams, furthest-site
        Delaunay triangulations, and furthest-site Voronoi diagrams. It
        runs in 2-d, 3-d, 4-d, and higher dimensions. It implements the
        Quickhull algorithm for computing the convex hull. Qhull does
        not support constrained Delaunay triangulations, or mesh
        generation of non-convex objects, but the package does include
        some R functions that allow for this. Currently the package
        only gives access to Delaunay triangulation and convex hull
        computation.

extprod3d: Compute external- or `cross'- product of 3D vectors.

Description

Usage

Arguments

Value