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Scott, You should send your questions regarding MNE and/or MNE-python (for the most part) to (http://mail.nmr.mgh.harvard.edu/mailman/listinfo/mne_analysis) or visit the MNE-python github page if questions concern the python code specifically. Post to the appropriate list so that others may access the thread in case the question arises again, if it hasn't already been answered. Assuming your SUBJECTS_DIR env variable is correctly set, arguments to subject_from & subject_to should be strings for subject IDs (not paths) and stc_from should be an stc object (c.f. http://martinos.org/mne/stable/generated/mne.morph_data.html?highlight=mne.morph_data#mne.morph_data ). best, Kambiz ------------------------------------------------------------ Kambiz Tavabi PhD Institute for Learning & Brain Sciences 1715 Columbia Road N Portage Bay Building Box 357988 University of Washington Seattle, WA 98195-7988 Tel: 206-685-6173 ------------------------------------------------------------ On Mon, Jun 1, 2015 at 6:05 AM, Scott Marek <[log in to unmask]> wrote: > Hello, > > I am relatively new to mne python and am running into some trouble on > warping from individual subjects to fsaverage. Here is my call to > mne.morph_data: > > > mne.morph_data(subject_from,subject_to,stc_from,grade=4,smooth=None,subjects_dir=subjects_dir,buffersize=64,n_jobs=1,verbose=None) > > subject_from = path to subject dir > subject_to = path to fsaverage dir > stc from = path to stc file produced from 'apply_raw_inverse' > > When I run this script I get the following error: > > ValueError: Morphing is only possible with surface source estimates > > I'm assuming I am using the wrong input for stc_from since > 'apply_raw_inverse' gives you th lh and rh stc files. Typically with the > old MNE I would average after running mne_do_inverse_operator and prior to > source projection with mne_compute_raw_inverse. Could you please shed some > light on this error, as well as the general flow of mne python commands I > should be using? > > Thank you! > > Scott >