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<p style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 16px;">Hi Peter,<br>
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<p style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 16px;"><br>
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<p style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 16px;">If you've used the 'lcmv' method for ft_sourceanalysis, you ought to have the time series already contained in source.avg.mom.<br>
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<p style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 16px;">I've been working a lot lately on improving the LCMV functionality, but unfortunately haven't had a chance to document much yet. Especially if you are not contrasting different
conditions, you might want to try these parameters:<br>
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cfg.lcmv.weightnorm = 'nai'; % this is a new option :-)<br>
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<div><span style="font-size: 12pt;">cfg.lcmv.fixedori = 'yes';</span><br>
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<div>I also prefer to turn off reducerank, but YMMV:<br>
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<span style="font-size: 12pt;">cfg.lcmv.reducerank = 'no';</span></div>
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<p style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 16px;">Finally I've also contributed a viewer that will greatly help visualizing your virtual time series together with the MRI. You can find it in the latest distributions of FieldTrip
under fieldtrip/contrib/nutmegtrip. You'll also need a full version of SPM8 in your path (the external in FieldTrip doesn't have all the necessary functions).<br>
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<p style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 16px;"><br>
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<p style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 16px;">You can use it like this:<br>
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<p style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 16px;">cfg = [];<br>
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<p style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 16px;">cfg.mripath = '/path/to/mri/nii' % must be in nifti (nii) format<br>
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<p style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 16px;">cfg.funparameter = 'avg.mom'<br>
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<div>% cfg.atlas = ft_read_atlas('ROI_MNI_V4.nii'); % [optional] you can get atlas labels, if your MRI and grid points are based on the MNI grid<br>
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<div>nmt_sourceplot_spm8(cfg,ft_convert_units(source,'mm'));<br>
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<div>Cheers,<br>
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<div>Sarang<br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> fieldtrip-bounces@science.ru.nl <fieldtrip-bounces@science.ru.nl> on behalf of Peter Goodin <pgoodin@swin.edu.au><br>
<b>Sent:</b> Wednesday, June 15, 2016 3:32 PM<br>
<b>To:</b> FieldTrip discussion list<br>
<b>Subject:</b> [FieldTrip] LCMV returns no time series?</font>
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<p dir="ltr">Hi FieldTrip list,</p>
<p dir="ltr">I'm using LCMV on averaged data (covariancewindow='all') but find the returned source estimates only have a single point. Is there a way to specify the analysis returns the time series for each grid point?</p>
<p dir="ltr">Thanks,</p>
<p dir="ltr">Peter</p>
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