# v_zerotrim

## PURPOSE

V_ZEROTRIM Remove zero trailing rows and columns Z=(X)

## SYNOPSIS

function z=v_zerotrim(x)

## DESCRIPTION

    V_ZEROTRIM Remove zero trailing rows and columns Z=(X)
     returns a null matrix if x is all zero.

## CROSS-REFERENCE INFORMATION

This function calls:

This function is called by:

- v_readsfs V_READSFS Read a .SFS format sound file [Y,FS,HD,FFX]=(FF,TY,SUB,MODE,NMAX,NSKIP,XPATH)

## SOURCE CODE

    0001 function z=v_zerotrim(x)
    0002 %V_ZEROTRIM Remove zero trailing rows and columns Z=(X)
    0003 % returns a null matrix if x is all zero.
    0004
    0005 %      Copyright (C) Mike Brookes 1998
    0006 %      Version: $Id: v_zerotrim.m 10865 2018-09-21 17:22:45Z dmb $
    0007 %
    0008 %   VOICEBOX is a MATLAB toolbox for speech processing.
    0009 %   Home page: http://www.ee.ic.ac.uk/hp/staff/dmb/voicebox/voicebox.html
    0010 %
    0011 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
    0012 %   This program is free software; you can redistribute it and/or modify
    0013 %   it under the terms of the GNU Lesser General Public License as published by
    0014 %   the Free Software Foundation; either version 3 of the License, or
    0015 %   (at your option) any later version.
    0016 %
    0017 %   This program is distributed in the hope that it will be useful,
    0018 %   but WITHOUT ANY WARRANTY; without even the implied warranty of
    0019 %   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    0020 %   GNU Lesser General Public License for more details.
    0021 %
    0022 %   You can obtain a copy of the GNU Lesser General Public License from
    0023 %   https://www.gnu.org/licenses/ .
    0024 %
    0025 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
    0026
    0027 c=max(find(any(x,1)));
    0028 r=max(find(any(x,2)));
    0029 z=x(1:r,1:c);