Mercurial > hg > ltpda

annotate m-toolbox/classes/@ao/fftfilt_core.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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rev   line source
0
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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1 % FFTFILT_CORE Simple core method which computes the fft filter.
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Daniele Nicolodi <nicolodi@science.unitn.it>
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2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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Daniele Nicolodi <nicolodi@science.unitn.it>
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3 %
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Daniele Nicolodi <nicolodi@science.unitn.it>
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4 % DESCRIPTION: Simple core method which computes the fft filter.
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Daniele Nicolodi <nicolodi@science.unitn.it>
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5 %
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Daniele Nicolodi <nicolodi@science.unitn.it>
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6 % CALL: ao = fftfilt_core(ao, filt, Npad)
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Daniele Nicolodi <nicolodi@science.unitn.it>
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7 %
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Daniele Nicolodi <nicolodi@science.unitn.it>
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8 % INPUTS: ao: Single input analysis object
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Daniele Nicolodi <nicolodi@science.unitn.it>
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9 % Npad: Number of bins for zero padding
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Daniele Nicolodi <nicolodi@science.unitn.it>
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10 % filt: The filter to apply to the data
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Daniele Nicolodi <nicolodi@science.unitn.it>
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11 % smodel - a model to filter with.
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Daniele Nicolodi <nicolodi@science.unitn.it>
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12 % mfir - an FIR filter
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Daniele Nicolodi <nicolodi@science.unitn.it>
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13 % miir - an IIR filter
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Daniele Nicolodi <nicolodi@science.unitn.it>
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14 % tf - an ltpda_tf object. Including:
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Daniele Nicolodi <nicolodi@science.unitn.it>
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15 % - pzmodel
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Daniele Nicolodi <nicolodi@science.unitn.it>
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16 % - rational
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Daniele Nicolodi <nicolodi@science.unitn.it>
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17 % - parfrac
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Daniele Nicolodi <nicolodi@science.unitn.it>
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18 %
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Daniele Nicolodi <nicolodi@science.unitn.it>
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19 % VERSION: $Id: fftfilt_core.m,v 1.17 2011/05/30 10:42:32 mauro Exp $
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Daniele Nicolodi <nicolodi@science.unitn.it>
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20 %
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Daniele Nicolodi <nicolodi@science.unitn.it>
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21 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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Daniele Nicolodi <nicolodi@science.unitn.it>
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22
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Daniele Nicolodi <nicolodi@science.unitn.it>
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23 function bs = fftfilt_core(varargin)
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Daniele Nicolodi <nicolodi@science.unitn.it>
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24
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Daniele Nicolodi <nicolodi@science.unitn.it>
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25 bs = varargin{1};
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Daniele Nicolodi <nicolodi@science.unitn.it>
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26 filt = varargin{2};
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Daniele Nicolodi <nicolodi@science.unitn.it>
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27 Npad = varargin{3};
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Daniele Nicolodi <nicolodi@science.unitn.it>
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28
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Daniele Nicolodi <nicolodi@science.unitn.it>
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29 if nargin == 4
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Daniele Nicolodi <nicolodi@science.unitn.it>
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30 inCondsMdl = varargin{4};
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Daniele Nicolodi <nicolodi@science.unitn.it>
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31 else
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Daniele Nicolodi <nicolodi@science.unitn.it>
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32 inCondsMdl = [];
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Daniele Nicolodi <nicolodi@science.unitn.it>
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33 end
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34
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Daniele Nicolodi <nicolodi@science.unitn.it>
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35 [m, n] = size(bs.data.y);
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Daniele Nicolodi <nicolodi@science.unitn.it>
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36 % FFT time-series data
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Daniele Nicolodi <nicolodi@science.unitn.it>
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37 fs = bs.data.fs;
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Daniele Nicolodi <nicolodi@science.unitn.it>
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38 % zero padding data before fft
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Daniele Nicolodi <nicolodi@science.unitn.it>
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39 if isempty(Npad)
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Daniele Nicolodi <nicolodi@science.unitn.it>
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40 Npad = length(bs.data.y) - 1;
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Daniele Nicolodi <nicolodi@science.unitn.it>
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41 end
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Daniele Nicolodi <nicolodi@science.unitn.it>
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42 if n == 1
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Daniele Nicolodi <nicolodi@science.unitn.it>
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43 tdat = ao(tsdata([bs.data.y;zeros(Npad,1)], fs));
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Daniele Nicolodi <nicolodi@science.unitn.it>
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44 else
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Daniele Nicolodi <nicolodi@science.unitn.it>
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45 tdat = ao(tsdata([bs.data.y zeros(1,Npad)], fs));
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Daniele Nicolodi <nicolodi@science.unitn.it>
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46 end
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Daniele Nicolodi <nicolodi@science.unitn.it>
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47 % get onesided fft
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Daniele Nicolodi <nicolodi@science.unitn.it>
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48 ft = fft_core(tdat, 'one');
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Daniele Nicolodi <nicolodi@science.unitn.it>
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49
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Daniele Nicolodi <nicolodi@science.unitn.it>
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50 switch class(filt)
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Daniele Nicolodi <nicolodi@science.unitn.it>
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51 case 'smodel'
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Daniele Nicolodi <nicolodi@science.unitn.it>
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52 % Evaluate model at the given frequencies
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Daniele Nicolodi <nicolodi@science.unitn.it>
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53
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Daniele Nicolodi <nicolodi@science.unitn.it>
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54 amdly = filt.setXvals(ft.data.x).double;
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Daniele Nicolodi <nicolodi@science.unitn.it>
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55 amdly = reshape(amdly, size(ft.data.y));
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Daniele Nicolodi <nicolodi@science.unitn.it>
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56
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Daniele Nicolodi <nicolodi@science.unitn.it>
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57 amdl = ao(fsdata(ft.data.x, amdly, fs));
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Daniele Nicolodi <nicolodi@science.unitn.it>
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58
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Daniele Nicolodi <nicolodi@science.unitn.it>
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59 % set units
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Daniele Nicolodi <nicolodi@science.unitn.it>
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60 bs.setYunits(simplify(bs.data.yunits .* filt.yunits));
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Daniele Nicolodi <nicolodi@science.unitn.it>
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61
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Daniele Nicolodi <nicolodi@science.unitn.it>
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62 case {'miir', 'mfir', 'pzmodel', 'parfrac', 'rational'}
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Daniele Nicolodi <nicolodi@science.unitn.it>
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63
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Daniele Nicolodi <nicolodi@science.unitn.it>
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64 % Check if the frequency of the filter is the same as the frequency
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Daniele Nicolodi <nicolodi@science.unitn.it>
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65 % of the AO.
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Daniele Nicolodi <nicolodi@science.unitn.it>
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66 if isa (filt, 'ltpda_filter') && fs ~= filt.fs
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Daniele Nicolodi <nicolodi@science.unitn.it>
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67 error('### Please use a filter with the same frequency as the AO [%dHz]', fs);
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Daniele Nicolodi <nicolodi@science.unitn.it>
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68 end
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Daniele Nicolodi <nicolodi@science.unitn.it>
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69
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Daniele Nicolodi <nicolodi@science.unitn.it>
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70 % get filter response on given frequencies
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Daniele Nicolodi <nicolodi@science.unitn.it>
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71 amdl = resp(filt, plist('f', ft.data.x));
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Daniele Nicolodi <nicolodi@science.unitn.it>
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72
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Daniele Nicolodi <nicolodi@science.unitn.it>
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73 % set units
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Daniele Nicolodi <nicolodi@science.unitn.it>
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74 bs.setYunits(simplify(bs.data.yunits .* filt.ounits ./ filt.iunits));
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Daniele Nicolodi <nicolodi@science.unitn.it>
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75
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Daniele Nicolodi <nicolodi@science.unitn.it>
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76 case 'ao'
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Daniele Nicolodi <nicolodi@science.unitn.it>
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77
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Daniele Nicolodi <nicolodi@science.unitn.it>
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78 % check if filter and data have the same shape
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Daniele Nicolodi <nicolodi@science.unitn.it>
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79 if size(ft.data.y)~=size(filt.data.y)
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Daniele Nicolodi <nicolodi@science.unitn.it>
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80 % reshape
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Daniele Nicolodi <nicolodi@science.unitn.it>
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81 amdl = copy(filt,1);
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Daniele Nicolodi <nicolodi@science.unitn.it>
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82 amdl.setX(ft.data.x);
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Daniele Nicolodi <nicolodi@science.unitn.it>
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83 amdl.setY(reshape(filt.data.y,size(ft.data.x)));
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Daniele Nicolodi <nicolodi@science.unitn.it>
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84 amdl.setName(filt.name);
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Daniele Nicolodi <nicolodi@science.unitn.it>
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85 else
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Daniele Nicolodi <nicolodi@science.unitn.it>
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86 amdl = copy(filt,1);
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Daniele Nicolodi <nicolodi@science.unitn.it>
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87 amdl.setName(filt.name);
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Daniele Nicolodi <nicolodi@science.unitn.it>
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88 end
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Daniele Nicolodi <nicolodi@science.unitn.it>
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89
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Daniele Nicolodi <nicolodi@science.unitn.it>
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90 % set units
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Daniele Nicolodi <nicolodi@science.unitn.it>
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91 bs.setYunits(simplify(bs.data.yunits .* amdl.data.yunits));
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Daniele Nicolodi <nicolodi@science.unitn.it>
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92
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Daniele Nicolodi <nicolodi@science.unitn.it>
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93 case 'collection'
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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94
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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95 % run over collection elements
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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96 amdl = ao(fsdata(ft.data.x, ones(size(ft.data.x)), fs));
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Daniele Nicolodi <nicolodi@science.unitn.it>
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97 for ii=1:numel(filt.objs)
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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98 switch class(filt.objs{ii})
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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99 case 'smodel'
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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100 % Evaluate model at the given frequencies
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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101 amdly = filt.objs{ii}.setXvals(ft.data.x).double;
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Daniele Nicolodi <nicolodi@science.unitn.it>
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102 amdly = reshape(amdly, size(ft.data.y));
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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103 amdl_temp = ao(fsdata(ft.data.x, amdly, fs));
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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104 % set units
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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105 bs.setYunits(simplify(bs.data.yunits .* filt.objs{ii}.yunits));
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Daniele Nicolodi <nicolodi@science.unitn.it>
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106
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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107 case {'miir'}
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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108 % get filter response on given frequencies
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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109 amdly = utils.math.mtxiirresp(filt.objs{ii},ft.data.x,fs,[]);
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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110 amdl_temp = ao(fsdata(ft.data.x, amdly, fs));
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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111 % set units
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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112 bs.setYunits(simplify(bs.data.yunits .* filt.objs{ii}.ounits ./ filt.objs{ii}.iunits));
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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113
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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114 case 'ao'
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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115 % check if filter and data have the same shape
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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116 if size(ft.data.y)~=size(filt.objs{ii}.data.y)
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Daniele Nicolodi <nicolodi@science.unitn.it>
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117 % reshape
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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118 amdl_temp = copy(filt.objs{ii},1);
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Daniele Nicolodi <nicolodi@science.unitn.it>
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119 amdl_temp.setX(ft.data.x);
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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120 amdl_temp.setY(reshape(filt.objs{ii}.data.y,size(ft.data.x)));
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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121 amdl_temp.setName(filt.objs{ii}.name);
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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122 else
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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123 amdl_temp = copy(filt.objs{ii},1);
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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124 amdl_temp.setName(filt.objs{ii}.name);
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Daniele Nicolodi <nicolodi@science.unitn.it>
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125 end
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Daniele Nicolodi <nicolodi@science.unitn.it>
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126 % set units
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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127 bs.setYunits(simplify(bs.data.yunits .* amdl_temp.data.yunits));
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Daniele Nicolodi <nicolodi@science.unitn.it>
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128
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Daniele Nicolodi <nicolodi@science.unitn.it>
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129 case 'filterbank'
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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130 % get filter response on given frequencies
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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131 amdly = utils.math.mtxiirresp(filt.objs{ii}.filters,ft.data.x,fs,filt.objs{ii}.type);
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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132 amdl_temp = ao(fsdata(ft.data.x, amdly, fs));
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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133 % handle units
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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134 switch lower(filt.objs{ii}.type)
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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135 case 'parallel'
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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136 % set units of the output object
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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137 bs.setYunits(simplify(bs.data.yunits .* filt.objs{ii}.filters(1).ounits ./ filt.objs{ii}.filters(1).iunits));
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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138 case 'series'
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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139 % get units from the series
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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140 sunits = filt.objs{ii}.filters(1).ounits ./ filt.objs{ii}.filters(1).iunits;
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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141 for jj = 2:numel(filt.objs{ii}.filters)
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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142 sunits = sunits.*filt.objs{ii}.filters(jj).ounits ./ filt.objs{ii}.filters(jj).iunits;
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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143 end
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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144 % set units of the output object
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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145 bs.setYunits(simplify(bs.data.yunits .* sunits));
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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146 end
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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147 end
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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148 % update response
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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149 amdl = amdl .* amdl_temp;
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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150 end
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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151
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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152 otherwise
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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153
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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154 error('### Unknown filter mode.');
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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155
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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156 end
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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157
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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158 % Add initial conditions
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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159 if ~isempty(inCondsMdl) && ~isempty(inCondsMdl.expr.s)
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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160 inCondsMdl.setXvals(amdl.x);
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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161 inCondsMdl.setXunits(amdl.xunits);
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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162 inCondsMdl.setYunits(amdl.yunits*ft.yunits);
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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163 inCondsEval = inCondsMdl.eval;
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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164 % Multiply by model and take inverse FFT
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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165 y = ifft_core(ft.*amdl+inCondsEval, 'symmetric');
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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166 else
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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167 % Multiply by model and take inverse FFT
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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168 y = ifft_core(ft.*amdl, 'symmetric');
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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169 end
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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170
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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171 % split and reshape the data
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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172 if m == 1
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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173 bs.setY(y.data.getY(1:n));
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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174 else
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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175 bs.setY(y.data.getY(1:m));
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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176 end
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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177
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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178 % clear errors
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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179 bs.clearErrors;
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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180
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Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
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181 end