# v_qrpermute

## PURPOSE

V_QRPERMUTE transpose or permute a quaternion array y=[x,p]

## SYNOPSIS

function y=v_qrpermute(x,p)

## DESCRIPTION

    V_QRPERMUTE transpose or permute a quaternion array y=[x,p]

     Inputs:   x(4m,...)  Real quaternions array
               p          new order of dimensions [default [2 1 ...]

     Outputs:  y(4n,...)  output real quaternion array

## CROSS-REFERENCE INFORMATION

This function calls:

This function is called by:

## SOURCE CODE

    0001 function y=v_qrpermute(x,p)
    0002 %V_QRPERMUTE transpose or permute a quaternion array y=[x,p]
    0003 %
    0004 % Inputs:   x(4m,...)  Real quaternions array
    0005 %           p          new order of dimensions [default [2 1 ...]
    0006 %
    0007 % Outputs:  y(4n,...)  output real quaternion array
    0008
    0009 %      Copyright (C) Mike Brookes 2012
    0010 %      Version: $Id: v_qrpermute.m 10865 2018-09-21 17:22:45Z dmb $
    0011 %
    0012 %   VOICEBOX is a MATLAB toolbox for speech processing.
    0013 %   Home page: http://www.ee.ic.ac.uk/hp/staff/dmb/voicebox/voicebox.html
    0014 %
    0015 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
    0016 %   This program is free software; you can redistribute it and/or modify
    0017 %   it under the terms of the GNU Lesser General Public License as published by
    0018 %   the Free Software Foundation; either version 3 of the License, or
    0019 %   (at your option) any later version.
    0020 %
    0021 %   This program is distributed in the hope that it will be useful,
    0022 %   but WITHOUT ANY WARRANTY; without even the implied warranty of
    0023 %   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    0024 %   GNU Lesser General Public License for more details.
    0025 %
    0026 %   You can obtain a copy of the GNU Lesser General Public License from
    0027 %   https://www.gnu.org/licenses/ .
    0028 %
    0029 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
    0030 s=size(x);
    0031 if nargin<2
    0032     p=[2 1 3:length(s)];
    0033 end
    0034 s(1)=s(1)/4;
    0035 t=s(p);
    0036 t(1)=4*t(1);
    0037 y=reshape(permute(reshape(x,[4 s]),[1 p+1]),t);