Maybe there needs to be something in the nifti headers of one or more
volumes that isn't?

Although its already in perfect register, I will register my "t2" (mask of
ones) to my T1 (mtr) using the procedureyou list. Perhaps that will impart
header info that should be there.

On Sunday, 8 July 2012, Colin Reveley wrote:

> I'm really, really sorry I can't figure this out. I made a ribbon as close
> to berts as I could using mri_ribbon to get the estimate of the gm on each
> side, and then manual manipulation to add them as one volume with the
> region inside coloured as berts wm. some bits between gyro that should be o
> are coloured as l or r wm, but not much. I can try to improve if that,s the
> issue.
>
> Now I get the same output from you as before, except that the nans are
> gone. It says volume threshold is 0 to 0 and everything falls outside
> threshold.q at least it isn't nan.
>
> It isn't only myelin I want to map actually. I want to map scalar maps
> from diffusion data, basically the Westin maps. I want to compare those to
> myelin as per mtr, in several data sets including some marmoset stuff.
>
> Maybe I need to start again in free surfer, and do it all at 1mm, and
> register to f99 again. It takes a long time. I may be able to get matlab
> code from someone that works on the same principle as yours and adapt it to
> make a caret metric. I may not though.
>
> I really can't see what's wrong now. What byte order should the volumes
> all have? What data type?
>
> Sorry :( not smart enough to figure out.
>
> Colin
>
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