And after creating the mgh volume, how can I read it? Is it possible to open it in tksurfer? Should I load it as an overlay? I've used one of my already pre-processed subjects, created a 'vol' with the same number of vertices of one of the hemisferes, and saved the output of save_mgh file as an rh.thickness.mgh file. However, when I don't seem to be able to open it in tksurfer...
Thanks Ines 2007/8/6, Bruce Fischl <[EMAIL PROTECTED]>: > > they don't matter. For a real volume they would be the ras2vox transform > and the mr parameters. For your purposes they can be any 4x4 and you can > leave the mri_parms one out (it will detect and fill it in with zeros). > > Send these to the list so other people can answer! > > Bruce > On > Mon, 6 Aug 2007, Inês Souta wrote: > > > Hi again, > > > > I still don't understand what all the input objects of save_mgh function > > stand for. 'vol' is the vector of thickness values, 'fname' is the name > of > > the output .mgh file, and what about M and <mr_parms>? What do they > stand > > for and how should I define them? > > > > Thanks again, > > > > Ines > > > > 2007/7/31, Bruce Fischl <[EMAIL PROTECTED]>: > >> > >> Hi Ines, > >> > >> use the mgh route. The "vol" is actually the vector of thickness > values, > >> with one entry per vertex on the surface. > >> > >> cheers, > >> Bruce > >> On Tue, 31 Jul 2007, Inês Souta > >> wrote: > >> > >>> Hello, > >>> > >>> I was trying to create a cortical thickness map with constant values > in > >>> order to perform some tests. At first I tried using mris_convert. I > >>> converted my thickness file into ascii: > >>> > >>> mris_convert lh.thickness lh.thickess.asc > >>> > >>> then I used matlab to change all the values in the last column to 2,0. > I > >>> tried to convert the ascii file back to surface file by doing > >>> > >>> mris_convert lh.thicness.asc lh.thickness > >>> > >>> but I got "Segmentation fault". How can I convert may ascii file into > a > >>> surface one? > >>> > >>> After failling to acomplish this, I tried using the save_mgh and > >> load_mgh > >>> file, nevertheless I'm not quite sure which input values are needed. > >> Where > >>> can I put my fake values in the save_mgh file? And what is "vol"? > >>> > >>> Thanks, > >>> > >>> Ines > >>> > >
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