# Copyright (C) 1993, 1994, 1995 John W. Eaton
# 
# This file is part of Octave.
# 
# Octave is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2, or (at your option) any
# later version.
# 
# Octave is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
# for more details.
# 
# You should have received a copy of the GNU General Public License
# along with Octave; see the file COPYING.  If not, write to the Free
# Software Foundation, 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

function plot_2_v_v (x, y, fmt)

  if (nargin < 2 || nargin > 3)
    msg = sprintf ("plot_2_v_v (x, y)\n");
    msg = sprintf ("%s              plot_2_v_v (x, y, fmt)", msg);
    usage (msg);
  elseif (nargin == 2)
    fmt = "";
  endif

  [x_nr, x_nc] = size (x);
  [y_nr, y_nc] = size (y);

  if (x_nr == 1)
    x = x';
    tmp = x_nr;
    x_nr = x_nc;
    x_nc = tmp;
  endif

  if (y_nr == 1)
    y = y';
    tmp = y_nr;
    y_nr = y_nc;
    y_nc = tmp;
  endif

  if (x_nr != y_nr)
    error ("plot_2_v_v: vector lengths must match");
  endif

  tmp = [x, y];
  cmd = sprintf ("gplot tmp %s", fmt);
  eval (cmd);

endfunction