# 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 polar (x1, x2, fmt)

# usage: polar (theta, rho, fmt)
#
# Make a 2D plot given polar the coordinates theta and rho.
#
# The optional third argument specifies the line type.
#
# See also: plot, semilogx, semilogy, loglog, mesh, contour, bar,
#           stairs, gplot, gsplot, replot, xlabel, ylabel, title 

  set nologscale;
  set nopolar;

  if (nargin == 3)
    if (isstr (fmt))
      fmt = plot_opt ("polar", fmt);
    else
      error ("polar: third argument must be a string");
    endif
    polar_int_2 (x1, x2, fmt);
  elseif (nargin == 2)
    if (isstr (x2))
      fmt = plot_opt ("polar", x2);
      polar_int_1 (x1, fmt);
    else
      fmt = "";
      polar_int_2 (x1, x2, fmt);
    endif
  elseif (nargin == 1)
    fmt = "";
    polar_int_1 (x1, fmt);
  else
    usage ("polar (theta, rho, fmt)");
  endif

endfunction