index-class

The class <code>"index"</code> is a virtual class used for
  indices (in signatures) for matrix indexing and sub-assignment of
  <pkg>"Matrix"</pkg> matrices.<p></p><p>  In fact, it is currently implemented as a simple class union
  (<code><a href="/link/setClassUnion?package=Matrix&version=0.999375-46" rd-options="" data-mini-rdoc="Matrix::setClassUnion">setClassUnion</a></code>) of
  <code>"numeric"</code>,  <code>"logical"</code> and <code>"character"</code>.</p>

classes

Classes and methods for dense and sparse matrices and
        operations on them using Lapack and SuiteSparse.

Doug

Matrix

Sparse and Dense Matrix Classes and Methods

index-class function

Since it is a virtual Class, no objects
  may be created from it.

index-class: Virtual Class "index" - Simple Class for Matrix Indices

Description

Arguments

Objects from the Class

See Also

Examples