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annotate m-toolbox/classes/@pzmodel/getupperFreq.m @ 0:f0afece42f48

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Import.
author Daniele Nicolodi <nicolodi@science.unitn.it>
date Wed, 23 Nov 2011 19:22:13 +0100
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Daniele Nicolodi <nicolodi@science.unitn.it>
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1 % GETUPPERFREQ gets the frequency of the highest pole or zero in the model.
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2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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3 %
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4 % DESCRIPTION: GETUPPERFREQ gets the frequency of the highest pole or zero in
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5 % the model.
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6 %
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7 % CALL: f = getupperFreq(pzm);
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8 %
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9 % <a href="matlab:utils.helper.displayMethodInfo('pzmodel', 'getupperFreq')">Parameters Description</a>
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10 %
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11 % VERSION: $Id: getupperFreq.m,v 1.17 2011/04/08 08:56:32 hewitson Exp $
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12 %
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13 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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14
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15 function varargout = getupperFreq(varargin)
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16
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17 %%% Check if this is a call for parameters
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18 if utils.helper.isinfocall(varargin{:})
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19 varargout{1} = getInfo(varargin{3});
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20 return
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21 end
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22
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23 pzm = varargin{1};
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24
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25 % Some input checking
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26 if length(pzm) > 1
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27 error('### This method works only with one input.');
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28 end
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29
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30 poles = pzm.poles;
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31 zeros = pzm.zeros;
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32 np = numel(poles);
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33 nz = numel(zeros);
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34 f = 0;
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35 for j=1:np
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36 pole = poles(j);
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37 fc = pole.f;
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38 if fc > f
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39 f = fc;
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40 end
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41 end
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42
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43 for j=1:nz
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44 zero = zeros(j);
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45 fc = zero.f;
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46 if fc > f
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47 f = fc;
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48 end
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49 end
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50 if np==0 && nz==0
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51 f = 1;
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52 end
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53
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54 % Set outputs
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55 varargout{1} = f;
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56 end
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57
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58 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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59 % Local Functions %
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60 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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61
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62 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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63 %
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64 % FUNCTION: getInfo
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65 %
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66 % DESCRIPTION: Get Info Object
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67 %
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68 % HISTORY: 11-07-07 M Hewitson
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69 % Creation.
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70 %
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71 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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72
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73 function ii = getInfo(varargin)
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74 if nargin == 1 && strcmpi(varargin{1}, 'None')
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75 sets = {};
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76 pl = [];
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77 else
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78 sets = {'Default'};
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79 pl = getDefaultPlist;
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80 end
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81 % Build info object
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82 ii = minfo(mfilename, 'pzmodel', 'ltpda', utils.const.categories.internal, '$Id: getupperFreq.m,v 1.17 2011/04/08 08:56:32 hewitson Exp $', sets, pl);
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83 ii.setModifier(false);
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84 end
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85
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86 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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87 %
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88 % FUNCTION: getDefaultPlist
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89 %
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90 % DESCRIPTION: Get Default Plist
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91 %
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92 % HISTORY: 11-07-07 M Hewitson
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93 % Creation.
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94 %
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95 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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96
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97 function plout = getDefaultPlist()
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98 persistent pl;
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99 if exist('pl', 'var')==0 || isempty(pl)
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100 pl = buildplist();
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101 end
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102 plout = pl;
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103 end
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104
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105 function pl = buildplist()
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106 pl = plist.EMPTY_PLIST;
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107 end
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108