Mercurial > hg > ltpda

annotate m-toolbox/classes/@cdata/applyoperator.m @ 7:1e91f84a4be8 database-connection-manager

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Make ltpda_up.retrieve work with java.sql.Connection objects
author Daniele Nicolodi <nicolodi@science.unitn.it>
date Mon, 05 Dec 2011 16:20:06 +0100
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1 % APPLYOPERATOR applys the given operator to the two input data objects.
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2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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3 %
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4 % DESCRIPTION: APPLYOPERATOR applys the given operator to the two input
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5 % cdata objects.
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6 %
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7 % CALL: d = applyoperator(d1, d2, pl)
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8 %
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9 % INPUTS: d1 - a cdata object
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10 % d2 - a ltpda_data object (cdata, tsdata, fsdata, xydata)
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11 % pl - a plist of configuration options
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12 %
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13 % PARAMETERS: 'op' - the operator to apply, e.g. 'power'
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14 %
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15 % VERSION: $Id: applyoperator.m,v 1.15 2011/02/18 16:48:51 ingo Exp $
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16 %
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17 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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18
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19 function varargout = applyoperator(varargin)
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20
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21 % Get the objects we have in the correct order
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22 objs = varargin(1:2);
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23
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24 % Get the operator to apply
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25 op = varargin{3};
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26
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27 if numel(objs) ~= 2
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28 error('### cdata/applyoperator requires two input data objects to work on.');
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29 end
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30
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31 % Decide the type of the output object
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32 if isa(objs{1}, 'data2D')
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33 %%% The first object in objs could not be a data2D because
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34 %%% then calls MATLAB data2D/applyoperator
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35 error('### Could/should not happen. Class obj1 [%s] class obj2 [%s]', class(objs{1}), class(objs{2}))
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36 elseif isa(objs{2}, 'data2D')
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37 dout = objs{2};
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38 else
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39 dout = objs{1};
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40 end
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41
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42
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43 % Here we make some checks
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44 s1 = size(objs{1}.y);
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45 s2 = size(objs{2}.y);
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46 trans = false;
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47
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48 % The exponent size should be the same OR one of the two should be 1
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49 if ~isequal(s1, s2)
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50 if isequal(s1, flipdim(s2, 2))
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51 % We will need to transpose one vector
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52 trans = true;
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53 elseif ~isequal(s1, [1 1]) && ~isequal(s2, [1 1])
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54 error('### Mismatch between the data and the exponent size')
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55 end
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56 end
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57
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58 % Calculate the uncertainty
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59 if ~isempty(objs{1}.dy)
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60 switch op
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61 case 'power'
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62 if trans
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63 dout.dy = objs{1}.dy .* abs(objs{2}.y' .* objs{1}.y.^(objs{2}.y'-1));
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64 else
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65 dout.dy = objs{1}.dy .* abs(objs{2}.y .* objs{1}.y.^(objs{2}.y-1));
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66 end
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67 otherwise
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68 end
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69 end
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70
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71 % Finally, apply the operator to the data
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72 if trans
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73 dout.y = feval(op, objs{1}.y, objs{2}.y');
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74 else
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75 dout.y = feval(op, objs{1}.y, objs{2}.y);
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76 end
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77
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78 varargout{1} = dout;
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79 end
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80
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