isempty.m

particle filter 粒子滤波器 matlab工具箱

function bool=isempty(obj)
% Returns true if the object is considered empty, false otherwise.
%
% Syntax: (* = optional)
%
% bool = isempty(obj);
%
% In arguments:
%
% 1. model
%	The data object
%
% Out arguments:
%
% 1. v
%	The resulting logic datatype (true/false)

% Toolbox for nonlinear filtering.
% Copyright (C) 2005  Jakob Ros閚 <[e-mail]>
%
% This program 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
% of the License, or (at your option) any later version.
%
% This program 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 this program; if not, write to the Free Software
% Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

if length(obj.R)
	bool=false;
else
	bool=true;
end