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annotate m-toolbox/classes/@ssm/doSimplify.m @ 15:ce3fbb7ebe71 database-connection-manager

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Remove broken functions from utils.jmysql
author Daniele Nicolodi <nicolodi@science.unitn.it>
date Mon, 05 Dec 2011 16:20:06 +0100
parents f0afece42f48
children
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Daniele Nicolodi <nicolodi@science.unitn.it>
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1 % DOSIMPLIFY enables to do model simplification. It is a private function
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2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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3 %
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4 %
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5 % DESCRIPTION: DOSIMPLIFY allows to eliminate input/state/output variables.
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6 %
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7 % CALL: [ssm] = DOSIMPLIFY(ssm, options); (private)
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8 %
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9 % INPUTS :
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10 % ssm - a ssm object
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11 % options - an options plist
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12 %
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13 % OPTIONS :
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14 % plist with parameters 'inputs', 'states' and 'outputs' to indicate which
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15 % inputs, states and outputs variables are taken in account. This requires
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16 % proper variable naming. If a variable called appears more that once it
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17 % will be used once only.
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18 % The field may be :
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19 % - a cellstr containing the resp. input/state/output *variable* names
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20 % - a logical indexing the resp. input/state/output
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21 % *variables*. Index is stored in a cell array, each cell
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22 % correponding to one input/state/output block.
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23 % - a double indexing the resp. input/state/output
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24 % *variables*. Index is stored in a cell array, each cell
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25 % correponding to one input/state/output block.
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26 % - 'ALL', this string indicates all i/o variables will be
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27 % given
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28 %
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29 % OUTPUTS:
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30 % The output array are of size Nsys*Noptions
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31 % sys_out - (array of) ssm objects without the specified information
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32 %
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33 %
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34 function varargout = doSimplify(varargin)
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35
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36 % Collect all SSMs and plists
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37 [sys, ssm_invars, rest] = utils.helper.collect_objects(varargin(:), 'ssm');
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38 [pl, invars2, rest] = utils.helper.collect_objects(rest(:), 'plist');
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39 if ~isempty(rest)
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40 pl = combine(pl, plist(rest{:}));
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41 end
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42 pl = combine(pl, getDefaultPlist());
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43
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44 if numel(sys) ~= 1
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45 error('### Please input (only) one SSM model');
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46 end
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47
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48 % Decide on a deep copy or a modify, depending on the output
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49 sys = copy(sys, nargout);
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50
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51 %% retrieving indexes
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52 indexInputs = makePortLogicalIndex( sys.inputs, find(pl,'inputs') );
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53 indexStates = makePortLogicalIndex( sys.states, find(pl,'states') );
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54 indexOutputs = makePortLogicalIndex( sys.outputs, find(pl,'outputs') );
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55
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56 %% pruning the object fields and assigning fields
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57 % cell_mat lines wanted cols wanted
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58 sys.amats = ssm.blockMatPrune(sys.amats, indexStates, indexStates);
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59 sys.bmats = ssm.blockMatPrune(sys.bmats, indexStates, indexInputs);
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60 sys.cmats = ssm.blockMatPrune(sys.cmats, indexOutputs, indexStates);
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61 sys.dmats = ssm.blockMatPrune(sys.dmats, indexOutputs, indexInputs);
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62
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63 sys.inputs = applyPortLogicalIndex(sys.inputs, indexInputs );
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64 sys.states = applyPortLogicalIndex(sys.states, indexStates );
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65 sys.outputs = applyPortLogicalIndex(sys.outputs, indexOutputs );
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66
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67 %% output
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68 varargout{1} = sys;
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69
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70 end
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71
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72
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73 %--------------------------------------------------------------------------
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74 % Get Default Plist
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75 %--------------------------------------------------------------------------
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76 function pl = getDefaultPlist()
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77 pl = plist();
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78
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79 p = param({'inputs', 'input index'}, 'ALL');
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80 pl.append(p);
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81
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82 p = param({'states', 'states index'}, 'ALL');
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83 pl.append(p);
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84
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85 p = param({'outputs', 'output index'}, 'ALL');
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86 pl.append(p);
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87
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88 end