Mercurial > hg > ltpda
comparison m-toolbox/classes/@cdata/plus.m @ 0:f0afece42f48
Import.
| author | Daniele Nicolodi <nicolodi@science.unitn.it> |
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| date | Wed, 23 Nov 2011 19:22:13 +0100 |
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| -1:000000000000 | 0:f0afece42f48 |
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| 1 % PLUS implements addition operator for cdata objects. | |
| 2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% | |
| 3 % | |
| 4 % DESCRIPTION: PLUS implements addition operator for two cdata objects. | |
| 5 % | |
| 6 % CALL: a = d1+d2 | |
| 7 % a = plus(d1,d2); | |
| 8 % | |
| 9 % <a href="matlab:utils.helper.displayMethodInfo('cdata', 'plus')">Parameters Description</a> | |
| 10 % | |
| 11 % VERSION: $Id: plus.m,v 1.3 2011/04/08 08:56:34 hewitson Exp $ | |
| 12 % | |
| 13 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% | |
| 14 | |
| 15 function varargout = plus(varargin) | |
| 16 | |
| 17 % get two data objects | |
| 18 d1 = copy(varargin{1}, nargout); | |
| 19 d2 = copy(varargin{2}, nargout); | |
| 20 | |
| 21 % check units | |
| 22 d1.yunits.simplify(); | |
| 23 d2.yunits.simplify(); | |
| 24 | |
| 25 if ~isempty(d1.yunits.strs) && ~isempty(d2.yunits.strs) && d1.yunits ~= d2.yunits | |
| 26 error('### When adding two data objects, the yunits must be the same'); | |
| 27 end | |
| 28 | |
| 29 % add the data | |
| 30 dout = applyoperator(d1,d2,'plus'); | |
| 31 | |
| 32 % handle units: since both are the same, we take the first non-empty unit | |
| 33 if isempty(d1.yunits.strs) | |
| 34 dout.yunits = d2.yunits; | |
| 35 else | |
| 36 dout.yunits = d1.yunits; | |
| 37 end | |
| 38 | |
| 39 % handle errors | |
| 40 err = @(err1, err2) sqrt(err1 .^2 + err2.^2); | |
| 41 if ~isempty(d1.dy) || ~isempty(d2.dy) | |
| 42 if isempty(d1.dy) | |
| 43 d1.dy = zeros(size(d2.dy)); | |
| 44 end | |
| 45 if isempty(d2.dy) | |
| 46 d2.dy = zeros(size(d1.dy)); | |
| 47 end | |
| 48 dout.dy = err(d1.dy, d2.dy); | |
| 49 else | |
| 50 dout.dy = []; | |
| 51 end | |
| 52 | |
| 53 | |
| 54 % Single output | |
| 55 varargout{1} = dout; | |
| 56 | |
| 57 end | |
| 58 |