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+## Copyright (C) 2011 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 3 of the License, 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, see
+## <http://www.gnu.org/licenses/>.
+
+## -*- texinfo -*-
+## @deftypefn {Function File} {} isrow (@var{x})
+## Return true if @var{x} is a row vector.
+## @seealso{iscolumn, isscalar, isvector, ismatrix}
+## @end deftypefn
+
+## Author: Rik Wehbring
+
+function retval = isrow (x)
+
+  retval = false;
+
+  if (nargin != 1)
+    print_usage ();
+  endif
+
+  sz = size (x);
+  retval = (ndims (x) == 2 && (sz(1) == 1));
+
+endfunction
+
+%!assert(isrow ([1, 2, 3]));
+%!assert(isrow ([1; 2; 3]), false);
+%!assert(isrow (1));
+%!assert(isrow ([]), false);
+%!assert(isrow ([1, 2; 3, 4]), false);
+
+%!test
+%! warning ("off", "Octave:str-to-num");
+%! assert((isrow ("t")));
+%!test
+%! warning ("off", "Octave:str-to-num");
+%! assert((isrow ("test")));
+
+%!assert(!(isrow (["test"; "ing"])));
+
+%!test
+%! s.a = 1;
+%! assert((isrow (s)));
+
+%% Test input validation
+%!error isrow ();
+%!error isrow ([1, 2], 2);
+