spherize

spherize.zonotope

The input is a zonotope with a best-fit ellipsoid
(or ellipse for a zonogon)
with axes that may have very different lengths.
The function computes a spherizing matrix <code>W</code>, and then
transforms the zonotope so its boundary is close to a sphere.

Computes a zonohedron from real vector generators. The package also computes zonogons (2D zonotopes) and zonosegs (1D zonotopes). An elementary S3 class for matroids is included, which supports matroids with rank 3, 2, and 1. Optimization methods are taken from Heckbert (1985) <https://www.cs.cmu.edu/~ph/zono.ps.gz>.

Glenn Davis

zonohedra

Compute and Plot Zonohedra from Vector Generators

spherize function

<dl><dt>x</dt>
<dd>a zonotope object - a zonohedron, a zonogon,
or a zonoseg.</dd>
<dt>method</dt>
<dd>for computing the matrix <code>W</code>, either <code>'ZCA'</code> or <code>'PCA-COR'</code>.
Matching is partial and case-insensitive.</dd>
<dt>...</dt>
<dd>not used</dd></dl>

Arguments

spherize a zonotope — spherize

<dl>

<dt>x</dt>
<dd>a zonotope object - a zonohedron, a zonogon,
or a zonoseg.</dd>


<dt>method</dt>
<dd>for computing the matrix <code>W</code>, either <code>'ZCA'</code> or <code>'PCA-COR'</code>.
Matching is partial and case-insensitive.</dd>


<dt>...</dt>
<dd>not used</dd>

</dl>

spherize: spherize a zonotope

Description

Usage

Value

Arguments

Details

References

See Also