# Copyright (C) 1993, 1994 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, 675 Mass Ave, Cambridge, MA 02139, USA.

function plot_int (x1, x2)

  if (nargin == 1)
    [nr, nc] = size (x1);
    if (nr == 1)
      x1 = x1';
      tmp = nr;
      nr = nc;
      nc = tmp;
    endif
    x1_i = imag (x1);
    if (any (x1_i))
      x2 = x1_i;
      x1 = real (x1);
    else
      x2 = x1;
      x1 = (1:nr)';
    endif
  endif

  if (nargin <= 2)
    if (any (imag (x1)))
      x1 = real (x1);
    endif
    if (any (imag (x2)))
      x2 = real (x2);
    endif
    if (is_scalar (x1))
      if (is_scalar (x2))
        plot_2_s_s (x1, x2);
      endif
    elseif (is_vector (x1))
      if (is_vector (x2))
        plot_2_v_v (x1, x2);
      elseif (is_matrix (x2))
        plot_2_v_m (x1, x2);
      endif
    elseif (is_matrix (x1))
      if (is_vector (x2))
        plot_2_m_v (x1, x2);
      elseif (is_matrix (x2))
        plot_2_m_m (x1, x2);
      endif
    endif
  else
    usage = sprintf ("usage: plot_int (x)\n");
    usage = sprintf ("%s       plot_int (x, y)", usage);
    error (usage);
  endif

endfunction