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det

PURPOSE ^

DET overloads the determinant function for Analysis objects.

SYNOPSIS ^

function varargout = det(varargin)

DESCRIPTION ^

 DET overloads the determinant function for Analysis objects.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

 DESCRIPTION: DET overloads the determinant function for Analysis objects.

 CALL:        a = det(a1)   % only with data = cdata

 VERSION:     $Id: det.m,v 1.7 2007/06/22 08:32:49 ingo Exp $

 The following call returns a parameter list object that contains the
 default parameter values:

 >> pl = det(ao, 'Params')

 HISTORY: 08-05-07 A Monsky
             Creation

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

CROSS-REFERENCE INFORMATION ^

This function calls: This function is called by:

SUBFUNCTIONS ^

SOURCE CODE ^

0001 function varargout = det(varargin)
0002 % DET overloads the determinant function for Analysis objects.
0003 %
0004 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
0005 %
0006 % DESCRIPTION: DET overloads the determinant function for Analysis objects.
0007 %
0008 % CALL:        a = det(a1)   % only with data = cdata
0009 %
0010 % VERSION:     $Id: det.m,v 1.7 2007/06/22 08:32:49 ingo Exp $
0011 %
0012 % The following call returns a parameter list object that contains the
0013 % default parameter values:
0014 %
0015 % >> pl = det(ao, 'Params')
0016 %
0017 % HISTORY: 08-05-07 A Monsky
0018 %             Creation
0019 %
0020 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
0021 
0022 %% Check if this is a call for parameters
0023 if nargin == 2
0024   if isa(varargin{1}, 'ao') && ischar(varargin{2})
0025     in = char(varargin{2});
0026     if strcmp(in, 'Params')
0027       varargout{1} = getDefaultPL();
0028       return
0029     end
0030   end
0031 end
0032 
0033 %% capture input variable names
0034 invars = {};
0035 
0036 
0037 ALGONAME = mfilename;
0038 VERSION  = '$Id: det.m,v 1.7 2007/06/22 08:32:49 ingo Exp $';
0039 
0040 as = [];
0041 bs = [];
0042 ps = [];
0043 
0044 for j=1:nargin
0045   invars = [invars cellstr(inputname(j))];
0046   if isa(varargin{j}, 'ao')
0047     as = [as varargin{j}];
0048   end
0049   if isa(varargin{j}, 'plist')
0050     ps = [ps varargin{j}];
0051   end
0052 end
0053 
0054 
0055 % check plist
0056 if isempty(ps)
0057   pl = getDefaultPL();
0058 else
0059   pl = combine(ps, getDefaultPL);
0060 end
0061 
0062 %% go through analysis objects
0063 for j=1:length(as)
0064   a = as(j);
0065 
0066 
0067   d = get(a, 'data');
0068   dinfo = whos('d');
0069   % Which data type do we have
0070   dtype = dinfo.class;
0071 
0072   switch dtype
0073     case 'cdata'
0074      disp('* DETERMINANT of cdata object');
0075      % make a new cdata object
0076      [h, c] = single_operation(d, 'det', pl);
0077 
0078      % make output analysis object
0079      h = set(h, 'invars', [a.hist]);
0080      b = ao(c, h);
0081      b = set(b, 'name',  sprintf('det(%s)', char(invars{1})));
0082     case {'tsdata','fsdata','xydata'}
0083      error('### this function works for cdata type AO only')
0084     otherwise
0085      error('### unknown data type.')
0086    end
0087 
0088    % add to output
0089    bs = [bs b];
0090 end
0091 
0092 varargout{1} = bs;
0093 
0094 %% Get default params
0095 function plo = getDefaultPL()
0096 
0097 disp('* creating default plist...');
0098 plo = plist();
0099 disp('* done.');
0100 
0101 
0102 % END

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