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annotate m-toolbox/classes/@ao/delay.m @ 1:2014ba5b353a database-connection-manager

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Remove old code
author Daniele Nicolodi <nicolodi@science.unitn.it>
date Sat, 03 Dec 2011 18:13:55 +0100
parents f0afece42f48
children
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Daniele Nicolodi <nicolodi@science.unitn.it>
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1 % DELAY delays a time-series using various methods.
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2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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3 %
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4 % DESCRIPTION: DELAY delays a time-series using various methods.
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5 %
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6 % CALL: b = delay(a, pl)
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7 %
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8 %
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Daniele Nicolodi <nicolodi@science.unitn.it>
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9 % PARAMETERS: N - delay the time-series by N samples. [default: 0]
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10 % Choose a 'method' for how the end of the time-series
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11 % is handled:
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12 % 'zero' - zero pad the time-series
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13 %
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14 % <a href="matlab:utils.helper.displayMethodInfo('ao', 'delay')">Parameters Description</a>
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15 %
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16 % EXAMPLES: 1) Shift by 10 samples and zero pad the end of the time-series
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17 % >> b = delay(a, plist('N', 10, 'method', 'zero'));
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18 %
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19 %
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20 % VERSION: $Id: delay.m,v 1.27 2011/04/08 08:56:11 hewitson Exp $
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21 %
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22 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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23
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24 % TODO
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25 % 'extrap' - extrapolate the last N samples
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26
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27 function varargout = delay(varargin)
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28
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29 % Check if this is a call for parameters
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30 if utils.helper.isinfocall(varargin{:})
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31 varargout{1} = getInfo(varargin{3});
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32 return
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33 end
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34
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35 import utils.const.*
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36 utils.helper.msg(msg.PROC3, 'running %s/%s', mfilename('class'), mfilename);
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37
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38 % Collect input variable names
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39 in_names = cell(size(varargin));
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40 for ii = 1:nargin,in_names{ii} = inputname(ii);end
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41
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42 % Collect all AOs
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43 [as, ao_invars] = utils.helper.collect_objects(varargin(:), 'ao', in_names);
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44 pl = utils.helper.collect_objects(varargin(:), 'plist', in_names);
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45
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46 % Decide on a deep copy or a modify
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47 bs = copy(as, nargout);
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48
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49 % Combine plists
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50 pl = parse(pl, getDefaultPlist);
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51
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52 %----------- Get parameters
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53
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54 % 1: Sample shift
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55 N = find(pl, 'N');
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56 method = find(pl, 'method');
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57
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58 % Loop over AOs
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59 for j=1:numel(bs)
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60 if ~isa(bs(j).data, 'tsdata')
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61 warning('!!! Skipping object %s - it contains no tsdata.', ao_invars{j});
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62 else
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63 % Which method to use
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64 switch lower(method)
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65 case 'zero'
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66 bs(j).data.setY([zeros(N,1); bs(j).data.getY(1:end-N)]);
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67 otherwise
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68 error('### Unknown method for dealing with end of time-series.');
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69 end
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70 % make output analysis object
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71 bs(j).name = sprintf('delay(%s)', ao_invars{j});
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72 % Add history
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73 bs(j).addHistory(getInfo('None'), pl, ao_invars(j), bs(j).hist);
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74 % Clear the errors since they don't make sense anymore
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75 clearErrors(bs(j));
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76 end
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77 end
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78
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79
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80 % Set output
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81 if nargout == numel(bs)
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82 % List of outputs
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83 for ii = 1:numel(bs)
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84 varargout{ii} = bs(ii);
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85 end
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86 else
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87 % Single output
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88 varargout{1} = bs;
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89 end
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90 end
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91
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92 %--------------------------------------------------------------------------
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93 % Get Info Object
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94 %--------------------------------------------------------------------------
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95 function ii = getInfo(varargin)
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96 if nargin == 1 && strcmpi(varargin{1}, 'None')
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97 sets = {};
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98 pl = [];
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99 else
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100 sets = {'Default'};
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101 pl = getDefaultPlist;
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102 end
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103 % Build info object
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104 ii = minfo(mfilename, 'ao', 'ltpda', utils.const.categories.sigproc, '$Id: delay.m,v 1.27 2011/04/08 08:56:11 hewitson Exp $', sets, pl);
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105 end
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106
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107 %--------------------------------------------------------------------------
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108 % Get Default Plist
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109 %--------------------------------------------------------------------------
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110
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111 function plout = getDefaultPlist()
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112 persistent pl;
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113 if exist('pl', 'var')==0 || isempty(pl)
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114 pl = buildplist();
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115 end
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116 plout = pl;
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117 end
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118
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119 function pl = buildplist()
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120 pl = plist();
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121
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122 % N
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123 p = param({'N', 'The number of samples to delay by.'}, {1, {0}, paramValue.OPTIONAL});
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124 pl.append(p);
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125
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126 % Method
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127 p = param({'method', 'The method for handling the end of the time-series.'}, {1, {'zero'}, paramValue.SINGLE});
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128 pl.append(p);
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129 end
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130
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131