sph2cart

describes the angle relative to the positive x-axis.

theta

is the angle relative to the xy-plane.

is the distance to the origin <code>(0, 0, 0)</code>.
If only a single return argument is requested then return a matrix
<code>C</code> where each row represents one Cartesian coordinate
(<code>x</code>, <code>y</code>, <code>z</code>).

The inputs <code>theta</code>, <code>phi</code>, and <code>r</code> must be the same
shape, or scalar. If called with a single matrix argument then
each row of <code>S</code> represents the spherical coordinate
(<code>theta</code>, <code>phi</code>, <code>r</code>).

Makes the 'Qhull' library <http://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 2D, 3D, 4D, 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.

David Sterratt

geometry

Mesh Generation and Surface Tessellation

sph2cart: Transform spherical coordinates to Cartesian coordinates

Description

Usage

Arguments

See Also