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annotate m-toolbox/classes/@ao/cpsd.m @ 43:bc767aaa99a8

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CVS Update
author Daniele Nicolodi <nicolodi@science.unitn.it>
date Tue, 06 Dec 2011 11:09:25 +0100
parents f0afece42f48
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Daniele Nicolodi <nicolodi@science.unitn.it>
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1 % CPSD estimates the cross-spectral density between time-series objects
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2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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3 %
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4 % DESCRIPTION: CPSD estimates the cross-spectral density between the
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5 % time-series objects in the input analysis objects. CPSD is computed
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Daniele Nicolodi <nicolodi@science.unitn.it>
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6 % using a modified version of MATLAB's cpsd (>> help cpsd).
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7 %
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8 % CALL: b = cpsd(a1,a2,pl)
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9 %
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Daniele Nicolodi <nicolodi@science.unitn.it>
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10 % INPUTS: aN - input analysis objects (two)
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11 % pl - input parameter list
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12 %
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13 % OUTPUTS: b - output analysis object
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14 %
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15 % <a href="matlab:utils.helper.displayMethodInfo('ao', 'cpsd')">Parameters Description</a>
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16 %
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17 % VERSION: $Id: cpsd.m,v 1.39 2011/12/01 08:51:34 hewitson Exp $
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18 %
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19 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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20
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21 function varargout = cpsd(varargin)
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22
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23 % Check if this is a call for parameters
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24 if utils.helper.isinfocall(varargin{:})
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25 varargout{1} = getInfo(varargin{3});
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26 return
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27 end
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28
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29 import utils.const.*
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30 utils.helper.msg(msg.PROC3, 'running %s/%s', mfilename('class'), mfilename);
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31
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32 if nargout == 0
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33 error('### cpsd cannot be used as a modifier. Please give an output variable.');
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34 end
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35
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36 % Collect input variable names
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37 in_names = cell(size(varargin));
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Daniele Nicolodi <nicolodi@science.unitn.it>
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38 for ii = 1:nargin,in_names{ii} = inputname(ii);end
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39
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40 % Collect all AOs
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41 [as, ao_invars] = utils.helper.collect_objects(varargin(:), 'ao', in_names);
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42
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43 % Apply defaults to plist
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44 pl = applyDefaults(getDefaultPlist, varargin{:});
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45
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46 % Throw an error if input is not two AOs
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47 if numel(as) ~= 2
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48 error('### cpsd only accepts two inputs AOs.');
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49 end
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50
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51 % Compute cross-spectrum with xspec
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52 bs = xspec(as, pl, 'cpsd', getInfo, ao_invars);
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53
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54 % Set output
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55 varargout{1} = bs;
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56
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57 end
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58
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59 %--------------------------------------------------------------------------
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60 % Get Info Object
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61 %--------------------------------------------------------------------------
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62 function ii = getInfo(varargin)
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63 if nargin == 1 && strcmpi(varargin{1}, 'None')
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64 sets = {};
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65 pl = [];
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66 else
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67 sets = {'Default'};
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68 pl = getDefaultPlist();
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69 end
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70 % Build info object
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71 ii = minfo(mfilename, 'ao', 'ltpda', utils.const.categories.sigproc, '$Id: cpsd.m,v 1.39 2011/12/01 08:51:34 hewitson Exp $', sets, pl);
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72 ii.setModifier(false);
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73 ii.setArgsmin(2);
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74 end
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75
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76 %--------------------------------------------------------------------------
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77 % Get Default Plist
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78 %--------------------------------------------------------------------------
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79
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80 function plout = getDefaultPlist()
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81 persistent pl;
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82 if ~exist('pl', 'var') || isempty(pl)
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83 pl = buildplist();
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84 end
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85 plout = pl;
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86 end
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87
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88 function pl = buildplist()
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89
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90 % General plist for Welch-based, linearly spaced spectral estimators
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91 pl = plist.WELCH_PLIST;
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92
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93 p = param('newMethod', paramValue.TRUE_FALSE);
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94 pl.append(p);
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95 end
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96