Returns the rank of a matrix <code>X</code>, using the QR decomposition, <code>qr()</code>.
Included here as a simple function, because <code>rank</code> does something different
and it is not obvious what to use for matrix rank.

A collection of matrix functions for teaching and learning matrix
    linear algebra as used in multivariate statistical methods. These functions are
    mainly for tutorial purposes in learning matrix algebra ideas using R. In some
    cases, functions are provided for concepts available elsewhere in R, but where
    the function call or name is not obvious. In other cases, functions are provided
    to show or demonstrate an algorithm.

Michael Friendly

matlib

Matrix Functions for Teaching and Learning Linear Algebra and
        Multivariate Statistics

R function

Rank of a Matrix

A collection of matrix functions for teaching and learning matrix
linear algebra as used in multivariate statistical methods. These functions are
mainly for tutorial purposes in learning matrix algebra ideas using R. In some
cases, functions are provided for concepts available elsewhere in R, but where
the function call or name is not obvious. In other cases, functions are provided
to show or demonstrate an algorithm. In addition, a collection of functions are
provided for drawing vector diagrams in 2D and 3D.

R: Rank of a Matrix

Description

Usage

Arguments

Value

See Also

Examples