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Hi Mona,</p>
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The cfg.frequency parameter in ft_selectdata only works on data with a frequency dimension.</p>
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Try using the cfg.bpfilter = 'yes'; cfg.bpfreq = [0.1 2]; in ft_preprocessing.</p>
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Best wishes,<br>
Mike</p>
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</p>
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Get <a href="https://aka.ms/ghei36">Outlook for Android</a></p>
<br>
<p></p>
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From: Wong-Barnum, Mona<br>
Sent: Thursday, 2 February, 18:22<br>
Subject: [FieldTrip] ft_selectdata<br>
To: FieldTrip discussion list<br>
<br>
</p>
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Hi: <br>
</p>
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I’m trying to do some frequency band filtering on my data using ft_selectdata but it doesn’t seem to be working…the new “filtered” data is the same as the original data.<br>
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Here is my code (note the eeg.mat file has been through the ft_preprocessing function):<br>
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addpath /path/to/fieldtrip</p>
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ft_defaults<br>
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disp ( 'Reading eeg.mat...' )</p>
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data = importdata ( 'eeg.mat' );<br>
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disp ( 'Getting low delta band...' )</p>
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cfg = [];</p>
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cfg.frequency = [0.1 2];</p>
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eeg_low_delta = ft_selectdata ( cfg, data );</p>
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disp ( 'Saving eeg_low_delta.mat...' );</p>
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save eeg_low_delta.mat eeg_low_delta -v7.3;<br>
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What am I doing wrong? All help is appreciated.<br>
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thanks,</p>
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Mona<br>
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************************************************************<br>
Mona Wong<br>
Web & Mobile Application Developer<br>
San Diego Supercomputer Center</p>
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"When your thoughts are too expensive,<br>
to ever want to keep."</p>
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-- U2's When I Look At The World<br>
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