get some important members of a zonotope
# S3 method for zonotope
getmatrix( x )# S3 method for zonotope
getmatroid( x )
# S3 method for zonotope
getcenter( x )
getmatrix() returns the matrix originally used to construct
the zonotope x.
getmatroid() returns the matroid (possibly nonsimple)
constructed from the matrix
getcenter() returns the center of the zonotope;
which is also the center of radial symmetry.
If x is an object-color solid, the center corresponds
to the 50% graypoint. For the whitepoint multiply by 2.
a zonotope object - a zonohedron, a zonogon, or a zonoseg
zonohedron(),
zonogon(),
zonoseg()