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Hi - most likely you have problems with your data timeseries...have you checked for NaNs in them? Which netmat option (eg full or partial correlation) are you using? Cheers. On 2 Jun 2014, at 21:24, Paul Beach <[log in to unmask]> wrote: > Stephen or anyone else, > > I'm getting a strange problem with nets_netmats.m > > Essentially, the output of the command is a matrix full ofl NaN and I have no idea why. It looks like it's loading the data properly. > > > Thoughts? > > > Thanks, > Paul > > > On Mon, Jun 2, 2014 at 11:59 AM, Stephen Smith <[log in to unmask]> wrote: > Hi - this is very data (and lambda and data size) dependent - so doesn't surprise me too much.... > Cheers > > > > On 2 Jun 2014, at 16:57, Paul Beach <[log in to unmask]> wrote: > >> Hi FSLers, >> >> I'm utilizing FSLnets and for some reason the nets_netmats command, in which I'm using L1-Norm regularization, is going REALLY slow (>5 min to finish) in matlab. It's been a few weeks since I last ran the scripts, but it used finish within a matter of seconds. I haven't really changed much wrt matlab or my directories of use. >> >> Specific command is: >> netmats2=nets_netmats(ts,1,'icov',10); >> >> 'ts' is a directory or two back. The L1-precision file is within the same directory as the nets_netmats file. >> netmats1, which just does a regular correlation matrix, is computed immediately. >> >> Any thoughts on how to figure out what's slowing it down? >> >> >> Cheers >> -- >> Paul Beach >> DO/PhD candidate - Year VI >> Michigan State University >> - College of Osteopathic Medicine >> - Neuroscience Program >> - MSU Cognitive and Geriatric Neurology Team (CoGeNT) > > > --------------------------------------------------------------------------- > Stephen M. Smith, Professor of Biomedical Engineering > Associate Director, Oxford University FMRIB Centre > > FMRIB, JR Hospital, Headington, Oxford OX3 9DU, UK > +44 (0) 1865 222726 (fax 222717) > [log in to unmask] http://www.fmrib.ox.ac.uk/~steve > --------------------------------------------------------------------------- > > Stop the cultural destruction of Tibet > > > > > > > > -- > Paul Beach > DO/PhD candidate - Year VI > Michigan State University > - College of Osteopathic Medicine > - Neuroscience Program > - MSU Cognitive and Geriatric Neurology Team (CoGeNT) --------------------------------------------------------------------------- Stephen M. Smith, Professor of Biomedical Engineering Associate Director, Oxford University FMRIB Centre FMRIB, JR Hospital, Headington, Oxford OX3 9DU, UK +44 (0) 1865 222726 (fax 222717) [log in to unmask] http://www.fmrib.ox.ac.uk/~steve --------------------------------------------------------------------------- Stop the cultural destruction of Tibet