 |
 |
The order matters in this case. Did you try putting the "-odt char" portion at the END of the command, as indicated by the Usage statement of fslmaths? ie. fslmaths zstat1.nii.gz -uthr -2.3 zstat_deact -odt char cheers, -MH On Tue, 2011-09-20 at 16:27 -0400, Leslie Engineering wrote: > I'm sorry, I spoke to soon. I did all my activation masks. That worked > fine. But, I must have the syntax wrong for deactivation. This is what > I tried: > > > fslmaths zstat1.nii.gz -uthr -2.3 -odt char zstat_deact* > > > Am I doing something wrong? I can't find a usage explanation for -odt > other than Usage: fslmaths [-dt <datatype>] <first_input> [operations > and inputs] <output> [-odt <datatype>] > which I thought I did? > Thanks > > On Tue, Sep 20, 2011 at 3:32 PM, Leslie Engineering > <[log in to unmask]> wrote: > Worked! Thanks so much! > > > On Tue, Sep 20, 2011 at 2:47 PM, wolf zinke <[log in to unmask] > bremen.de> wrote: > Hi, > > If you refer to positive z-values as activations, and > negative values as deactivations, you can do this with > fslmaths (assuming a z-threshold of 2.3) > > fslmaths zstat1.nii.gz -thr 2.3 zstat1_activation > fslmaths zstat1.nii.gz -uthr -2.3 zstat1_deactivation > > Use the -bin option and -odt char, if your output > should be a binary mask. > > good luck, > wolf > > > I have a zstat1.nii.gz from a group Feat > analysis. It contains regions of activation > and deactivation. How do I separate the two or > make masks for each region? > > Thanks so much! > > > >