Hi Alex, we don't have an elegant solution to this, but you can do it in matlab easily enough. If your data D are in a N-by-327684 matrix (I assume that this is left and right hemis), then
a.vol = permute(D(:,1:163842),[2 3 4 1]); MRIwrite(a,'lh.yourdata.mgh'); b.vol = permute(D(:,163843:end),[2 3 4 1]); MRIwrite(b,'rh.yourdata.mgh'); doug Alexander Lebedev wrote: > Excuse me for disturbing Douglas, > > The matter is that I have the coefficients for each vertex and I would > like to find the easiest way to display them into the brain space, > showing their importance for the classification. My original ascii > file contains N-by-327684 matrix (N subjects, 327 684 vertices - 163 > 842 for each hemisphere). But I can easily change it if necessary... > I'm just wondering if there is a way to do this... I'm asking because > it seems like "y.mgh -> y.asc" (mri_convert y.mgh y.ascii --ascii) > conversion is available only one-way. > --- > Regards, > Alex > > > * Alexander Lebedev <awl...@rambler.ru> [Fri, 27 Jan 2012 10:07:11 > +0400]: >> Yes, sorry... >> --- >> Alex >> >> > Hi Alex, I'm not sure I understand what you mean. Do you mean that > you >> > have a coefficient for each vertex and you want to display your >> results >> > on a surface and need to get them into a format that FS can read? >> > doug >> > >> > Alexander Lebedev wrote: >> > > Yes, thanks a lot Douglas! That's what I was looking for. And it's >> > > much easier than my approach... I needed to extract the vertices > in >> > > order to perform a multivariate analysis in R. May I also ask >> another >> > > question then? I have performed pls-regression and would like to > map >> > > the coefficients into the brain space... Is there such an >> opportunity >> > > (at least theoretically speaking) ? >> > > --- >> > > Regards, >> > > Alex >> > > >> > > > > -- Douglas N. Greve, Ph.D. MGH-NMR Center gr...@nmr.mgh.harvard.edu Phone Number: 617-724-2358 Fax: 617-726-7422 Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting FileDrop: www.nmr.mgh.harvard.edu/facility/filedrop/index.html _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.
