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+++ b/scripts/general/isvector.m
@@ -0,0 +1,41 @@
+## Copyright (C) 1996, 1997 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.
+
+## -*- texinfo -*-
+## @deftypefn {Function File} {} isvector (@var{a})
+## Return 1 if @var{a} is a vector.  Otherwise, return 0.
+## @end deftypefn
+## @seealso{size, rows, columns, length, isscalar, and ismatrix}
+
+## Author: jwe
+
+function retval = isvector (x)
+
+  retval = 0;
+
+  if (nargin == 1)
+    if (ismatrix (x))
+      [nr, nc] = size (x);
+      retval = ((nr == 1 && nc >= 1) || (nc == 1 && nr >= 1));
+    endif
+  else
+    usage ("isvector (x)");
+  endif
+
+endfunction