Mercurial > hg > ltpda
view m-toolbox/classes/@cdata/minus.m @ 47:dd93c9ba6624 database-connection-manager
Fix Java dialog
author | Daniele Nicolodi <nicolodi@science.unitn.it> |
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date | Tue, 06 Dec 2011 19:07:27 +0100 |
parents | f0afece42f48 |
children |
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% MINUS implements subtraction operator for cdata objects. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % DESCRIPTION: MINUS implements subtraction operator for two cdata objects. % % CALL: a = d1-d2 % a = minus(d1,d2); % % <a href="matlab:utils.helper.displayMethodInfo('cdata', 'minus')">Parameters Description</a> % % VERSION: $Id: minus.m,v 1.3 2011/04/08 08:56:34 hewitson Exp $ % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% function varargout = minus(varargin) % get two data objects d1 = copy(varargin{1}, nargout); d2 = copy(varargin{2}, nargout); % check units d1.yunits.simplify(); d2.yunits.simplify(); if ~isempty(d1.yunits.strs) && ~isempty(d2.yunits.strs) && d1.yunits ~= d2.yunits error('### When subtracting two data objects, the yunits must be the same'); end % add the data dout = applyoperator(d1,d2,'minus'); % handle units: since both are the same, we take the first non-empty unit if isempty(d1.yunits.strs) dout.yunits = d2.yunits; else dout.yunits = d1.yunits; end % handle errors err = @(err1, err2) sqrt(err1 .^2 + err2.^2); if ~isempty(d1.dy) || ~isempty(d2.dy) if isempty(d1.dy) d1.dy = zeros(size(d2.dy)); end if isempty(d2.dy) d2.dy = zeros(size(d1.dy)); end dout.dy = err(d1.dy, d2.dy); else dout.dy = []; end % Single output varargout{1} = dout; end