Would be nice if that were documented somewhere. :)
-----Original Message-----
From: FSL - FMRIB's Software Library [mailto:[log in to unmask]] On Behalf
Of Mark Jenkinson
Sent: Sunday, October 14, 2007 4:53 PM
To: [log in to unmask]
Subject: Re: [FSL] mm to vox coordinate
Dear Ping,
You can use the command:
std2imgcoord
to convert between coordinates (also img2imgcoord and img2stdcoord).
These are easy to incorporate within scripts.
All the best,
Mark
On 14 Oct 2007, at 21:05, Ping-Hong Yeh wrote:
> Hi,
>
> I'd like to know the antomate way of converting the coordinates in
> mm to vox
> so I could extract the ROI using fslroi. I knew I can just open the
> fslview
> and get the vox, but would perfer not to do so. I have used the SPM
> scripts
> (i.e. mm = [-22, 50, 50]; % example co-ordinates.
> V = spm_vol(spm_get(1,'*.img'));
> M = inv(V.mat);
> vox = (M(1:3,1:3)*mm' + repmat(M(1:3,4),1,size(mm,1)))', )
>
> but it did not get the right vox coordinate, not knowing why?
>
> Thanks.
>
> Ping
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