Hi Kimberley,
the -s option is actually doing what you want BUT with
sigma values instead of FWHM. So if you want precisely
8mm for the FWHM, sigma should be 8/(sqrt(ln2x8))=
roughly 3.4mm
Cheers,
Gwenaelle
--- Kimberly Chiew <[log in to unmask]> a écrit
:
> Hi Tim,
> On this topic, I'd like to use fslmaths in command
> line to smooth my data
> (8mm Gaussian filter) but am not sure which of the
> details to use. I'm
> pretty sure it's one of the following:
>
> fslmaths -s 8 ("spatial filtering")
> fslmaths -kernel gauss 8 ("kernel operations")
>
> If you could clarify, that would be great!
>
> Kim
>
> On Jan 30, 2008 2:42 AM, Tim Behrens
> <[log in to unmask]> wrote:
>
> > Hi - Command-line smoothing is now integrated into
> fslmaths.
> >
> > You can use any kernel you want with the -kernel
> option.
> >
> > Cheers
> >
> > T
> > On 29 Jan 2008, at 18:22, Carlos Faraco wrote:
> >
> > > I am wondering is there is a way to specify the
> smoothing kernel as
> > > is done
> > > in SPM? For example, can I specify a 5 x 7.5 x
> 7.5 kernel, instead
> > > of just 5?
> > >
> > > I know there is suppossed to be a command line
> smoothing option,
> > > ip, but I
> > > cannot find it in my install (4.0.3,
> CentOS4-32bit) and from what
> > > I've read
> > > here, it does not appear able to do the above.
> > >
> > > Thanks,
> > >
> > > Carlos
> > >
> >
>
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