Hi Matteo,
Unfortunately, as far as I know there is no easy way within the fslview GUI to do this. You can do it by creating your own colour map, but it is a bit of a hassle - have a look at the *.lut files in $FSLDIR/etc/luts for some examples.
The easy alternative would be to create a temporary image that reorders the negative values. It’s not very elegant, but probably much quicker if you just need to make one or two figures.
Best,
Eelke
> On 7 Dec 2016, at 15:51, Matteo Respino <[log in to unmask]> wrote:
>
> Hi Eelke,
>
> thank you so much for your help!!!
> Another question is:
>
> do you know how to reverse the color spectrum of blue-lightblue color bar?
> I'd like my higher values to have darker blue instead of lighter, and viceversa. This in order to make it consistent with afni color bar
> Thanks
>
>
>
>
> 2016-12-02 7:11 GMT-05:00 Eelke Visser <[log in to unmask]>:
> Hi Matteo,
>
> If you click the little ‘i’ next in the overlay toolbar, you can select an additional colour map for negative values under ‘Lookup table options’. The positive and negative ones are scalled symmetrically, so if you specify a min and max of 50 and 100, this will amount to -50 to -100 for the negative colour map.
>
> Hope that helps,
> Eelke
>
>
> > On 1 Dec 2016, at 21:40, Matteo Respino <[log in to unmask]> wrote:
> >
> > Hi,
> >
> > sorry to bother
> > I have a cluster in .nii image I'd like to visualize in FSLview.
> > All the voxels within the cluster have negative value,
> > how should I set the threshold?
> > It basically covers with a white background at intensity zero my standard brain
> >
> > Thank you in advance fro any help you may give me
> >
> > --
> > Matteo Respino, MD
> > Resident in Psychiatry
> > Visiting Research Fellow in Psychiatry
> >
> > Clinica Psichiatrica Universitaria
> > Facolta' di Medicina e Chirurgia di Genova
> > Largo Rosanna Benzi, Padiglione 32A
> > Genova, 16100, Italia
> > Weill Cornell Medicine
> > 21 Bloomingdale Rd,
> > White Plains, NY 10605
> >
> >
>
>
>
>
> --
> Matteo Respino, MD
> Resident in Psychiatry
> Visiting Research Fellow in Psychiatry
>
> Clinica Psichiatrica Universitaria
> Facolta' di Medicina e Chirurgia di Genova
> Largo Rosanna Benzi, Padiglione 32A
> Genova, 16100, Italia
> Weill Cornell Medicine
> 21 Bloomingdale Rd,
> White Plains, NY 10605
>
>
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