pol2cart

describes the angle relative to the positive x-axis.

theta

is the distance to the z-axis (0, 0, z).

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

Jean-Romain Roussel

pol2cart: Transform polar or cylindrical coordinates to Cartesian coordinates.

Description

Usage

Arguments

Value

See Also