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perhaps you may want to check the ‘avg’ field.
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<div class="">JM</div>
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<div class="">On 29 Sep 2017, at 12:19, Isac Sehlstedt <<a href="mailto:isac.sehlstedt@psy.gu.se" class="">isac.sehlstedt@psy.gu.se</a>> wrote:</div>
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<div style="font-size: 14px; font-family: Georgia, sans-serif;" class=""><span style="font-family: Times;" class="">Dear fieldtripers, </span></div>
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<font face="Times" class="">This is a kind reminder of a follow-up question to a previous question with the same mail-topic. </font></div>
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<font face="Times" class="">I have included my code below to show what I am doing (in case I have made errors) and print screens (follow dropbox-link below) of the variables I get after the ft_componentanalysis that I get. </font></div>
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<div style="margin: 0px; line-height: normal;" class=""><font face="Times" class="">Sadly, I cannot see any variable named comp.trial (see ft_componentanalysis-result1.tiff, or ft_componentanalysis-result2.tiff). Also, when running the PCA in matlab, I get
a coefficient array that has as many entries as there are time-points in my trials (see matlab_pca_results.tiff) . Why am I not getting that in ft? Is it possible to get that using ft?
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<div style="margin: 0px; line-height: normal;" class=""><span style="font-family: Times;" class="">Pictures are found using this link:
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<div class=""><a href="https://www.dropbox.com/sh/k6ax6bvjb5yi13l/AADvwBzGduIXlCLaPBS4_ELya?dl=0" class=""><font face="Times" style="font-size: 10px;" class=""><b class="">https://www.dropbox.com/sh/k6ax6bvjb5yi13l/AADvwBzGduIXlCLaPBS4_ELya?dl=0</b></font></a></div>
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<font face="Times" class="">Very Best,</font></div>
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<font face="Times" class="">Isac</font></div>
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<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">————————————————— The code —————————————————</font></div>
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<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">clear all; close all;</font></div>
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<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">%% Load </font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">load('averages_for_ft.mat')</font></div>
<p style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> </font></p>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""><br class="">
</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">%% define layout</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">cfg = [];</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">cfg.elec=PreOdd_ft{1, 1}.elec; </font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">cfg.rotate=90; %rotation around the z-axis in degrees (default = [], which means automatic)</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">layout = ft_prepare_layout(cfg)</font></div>
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<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""><br class="">
</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">%% Make the computations</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""><br class="">
</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">% Dummy varibles </font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">Cond1 = [];</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">Cond2 = [];</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">theDiff = [];</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">theDiff_ft = {};</font></div>
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<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""><br class="">
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<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">%% Start loop</font></div>
<p style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> </font></p>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">for i=1:size(Cond1_ft,2)</font></div>
<p style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> </font></p>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> %Get the basic condtitions</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> curr_Cond2 = Cond2_ft{i}.avg;</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> curr_Cond1 = Cond1_ft{i}.avg;</font></div>
<p style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> </font></p>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> %Get the basic condtitions</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> cfg = [];</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> curr_Cond2_ft = ft_timelockanalysis(cfg, Cond2_ft{i});</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> curr_Cond1_ft = ft_timelockanalysis(cfg, Cond1_ft{i});</font></div>
<p style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> </font></p>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> % Then take the difference of the averages using ft_math</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> cfg = [];</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> cfg.operation = 'subtract';</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> cfg.parameter = 'avg';</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> curr_difference = ft_math(cfg,curr_Cond1_ft,curr_Cond2_ft);</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> curr_difference_avg = curr_difference.avg;</font></div>
<p style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> </font></p>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> % Creating a struct with the subjectwise differences between conditions</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> theDiff_ft{i} = curr_difference</font></div>
<p style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> </font></p>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> % constructing concatenated averaged sets for the PCA. </font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> Cond2 = [Cond2 curr_Cond2];</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> Cond1 = [Cond1 curr_Cond1];</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> theDiff = [theDiff curr_difference_avg];</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">end</font></div>
<p style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> </font></p>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""><br class="">
</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">%% Create dummy subjects in order to run the PCA over subjects</font></div>
<p style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> </font></p>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">dummy_Cond2 = Cond2_ft{1};</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">dummy_Cond2.avg = Cond2; </font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">dummy_Cond2.time = 1:1:size(Cond2,2);</font></div>
<p style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> </font></p>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">dummy_Cond1 = Cond1_ft{1};</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">dummy_Cond1.avg = Cond1; </font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">dummy_Cond1.time = 1:1:size(Cond1,2);</font></div>
<p style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> </font></p>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">dummy_theDiff = Cond1_ft{1};</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">dummy_theDiff.avg = theDiff; </font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">dummy_theDiff.time = 1:1:size(theDiff,2);</font></div>
<p style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> </font></p>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""><br class="">
</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">%% Run the PCA</font></div>
<p style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> </font></p>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">cfg = [];</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">cfg.method = 'pca';</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">cfg.layout = layout;</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""><br class="">
</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">Cond1_comp = ft_componentanalysis(cfg, dummy_Cond1);</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">Cond2_comp = ft_componentanalysis(cfg, dummy_Cond2);</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">theDiff_comp = ft_componentanalysis(cfg, dummy_theDiff);</font></div>
<p style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> </font></p>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""><br class="">
</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">%% Revert back to subject level</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""><br class="">
</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">cfgCond2 = [];</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">cfgCond2.unmixing = Cond2_comp.unmixing;</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">cfgCond2.topolabel = Cond2_comp.topolabel;</font></div>
<p style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> </font></p>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">cfgCond1 = [];</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">cfgCond1.unmixing = Cond1_comp.unmixing;</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">cfgCond1.topolabel = Cond1_comp.topolabel;</font></div>
<p style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> </font></p>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">cfgtheDiff = [];</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">cfgtheDiff.unmixing = theDiff_comp.unmixing;</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">cfgtheDiff.topolabel = theDiff_comp.topolabel;</font></div>
<p style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> </font></p>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">for i=1:size(Cond1_ft,2)</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> Cond1_rs{i} = ft_componentanalysis(cfgCond1, Cond1_ft{i});</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> Cond2_rs{i} = ft_componentanalysis(cfgCond2, Cond2_ft{i});</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class=""> theDiff_rs{i}= ft_componentanalysis(cfgtheDiff, theDiff_ft{i} );</font></div>
<div style="margin: 0px; line-height: normal;" class=""><font face="Arial" style="font-size: 10px;" class="">end</font></div>
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