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is_vector.m
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1996-09-28
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# 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, 675 Mass Ave, Cambridge, MA 02139, USA.
function retval = is_vector (x)
# usage: is_vector (x)
#
# Return 1 if the either the number of rows (columns) of x is 1 and
# the number of columns (rows) is greater than one. Otherwise, return 0.
#
# See also: size, rows, columns, length, is_scalar, is_matrix
if (nargin == 1)
[nr, nc] = size (x);
retval = ((nr == 1 && nc > 1) || (nc == 1 && nr > 1));
else
usage ("is_vector (x)");
endif
endfunction