Dear Doug Thank you for your answer. I however encounter an error:
>> F.vol = fast_mat2vol(lfdr,F.volsize) ERROR: szvol inconsistent with mat2d I have attached the final output (.mgh) and the .asc file. (As the files are too large, I added them here: https://we.tl/MKhhmeT5Zn) Thank you Robby From: <freesurfer-boun...@nmr.mgh.harvard.edu> on behalf of Douglas Greve <gr...@nmr.mgh.harvard.edu> Reply-To: "freesurfer@nmr.mgh.harvard.edu" <freesurfer@nmr.mgh.harvard.edu> Date: Wednesday 15 June 2016 at 17:43 To: "freesurfer@nmr.mgh.harvard.edu" <freesurfer@nmr.mgh.harvard.edu> Subject: Re: [Freesurfer] Convert ascii to .mgh I would do it in matlab, eg, F = MRIread('F.mgh'); % This is to get the proper header information lfdr = load('lfdr.asc'); F.vol = fast_mat2vol(lfdr,F.volsize); MRIwrite(F,'lfdr.mgh'); On 6/15/16 4:45 AM, Robby De Pauw wrote: Dear FreeSurfer users, To address the problem of multiple comparison, I wanted to apply the localfdr-method. For this purpose, I need the F-statistic (which I can extract from the F.mgh scalar overlay I presume?). I converted this to an ascii-file, which I was able to load into R, using the following chink of code: mris_convert -c /Users/robbydepauw/Desktop/FreeSurfer/GLM/lh.Group.volume.glmdir/Groupeffect/F.mgh $SUBJECTS_DIR/fsaverage/surf/lh.white F.asc After performing an local fdr analysis in R, I want to create a scalar overlay “lfdr.mgh”, but I fail at converting the asci file into an “.mgh”-overlay file. Any idea how I could approach this conversion (from asci back to .mgh)? Many thanks, Greetings Robby Robby De Pauw, PT, MT, drs. T +32 09 332 12 19 | Email robby.dep...@ugent.be<mailto:robby.dep...@ugent.be> Ghent University | Rehabilitation Sciences and Physiotherapy Campus Heymans 3B3 (022) De Pintelaan 185 BE-9000 Ghent Route to my office<https://soleway.ugent.be/routes/1090> _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu<mailto:Freesurfer@nmr.mgh.harvard.edu> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
_______________________________________________ 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.
