Home > freetb4matlab > quaternion > qinv.m

qinv

PURPOSE

% Return the inverse of a quaternion.

SYNOPSIS

function retval = qinv (q)

DESCRIPTION

% -*- texinfo -*-
% @deftypefn {Function File} {} qinv (@var{q})
% Return the inverse of a quaternion.
%
% @example
% q = [w, x, y, z] = w*i + x*j + y*k + z
% qmult (q, qinv (q)) = 1 = [0 0 0 1]
% @end example
% @end deftypefn

CROSS-REFERENCE INFORMATION

This function calls:

qconj % Conjugate of a quaternion.

This function is called by:

qcoordinate_plot % Plot in the current figure a set of coordinate axes as viewed from
qtrans % Transform the unit quaternion @var{v} by the unit quaternion @var{q}.