Dear Pritha
I think what you need to do is simply threshold your
images at 0, you can do this with the image calc utility
in spm99 (i1 > 0) and (i1 < 0) ; you can ask the spm list
[log in to unmask]
if you have problems...
best
jb
>
> Can you help with this?
>
> Keith Worsley
> Department of Mathematics and Statistics, McGill University
> 805 ouest, rue Sherbrooke, Montreal, Quebec, Canada H3A 2K6
> tel: (514) 398-3842, fax: (514) 398-3899
> e-mail: [log in to unmask], web: http://www.math.mcgill.ca/keith
>
> ----- Original Message -----
> From: "Pritha Das" <[log in to unmask]>
> To: "keith worsley" <[log in to unmask]>
> Sent: Thursday, September 26, 2002 4:26 PM
> Subject: Eigen Images
>
> > Dear Keith,
> >
> > I'm doing multivariate analysis using
> > MMToolbox as mentioned in SPM page(www.madic.org/download/MMTBx/).I've
> > obtained eigen images but I don't know how to separate positive and
> > negative values as you have done in your paper (Neuroimage 6,1997). It
> > looks like you've used SPM functions. Since I'm a beginner in SPM I don't
> > know which functions to use. Could you please help me?
> >
> > Thanks for your help.
> >
> > Best Regards,
> > Pritha
> >
> >
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