Thanks John,
The Deformations utility is going to be very helpful, and so are the instructions in the DARTEL manual.
Is there also a simple way to "modulate" by a flow field *without* applying the flow field at the same time? I want to warp a whole brain image by A and later by B, segment the output of that and then modulate the segments by the composition (A o B).
If there is not already a GUI to do that, could you please point me to the *.m file for DARTEL's "Create Warped" so I may pick out the modulation step from there?
Thanks again,
Dana
-----Original Message-----
From: John Ashburner [mailto:[log in to unmask]]
Sent: Friday, October 17, 2008 10:16 AM
To: Dana Perantie; [log in to unmask]
Subject: Re: [SPM] combining non-linear warps
I forgot to mention that the approach involves the Deformations utility,
available from the Tasks pulldown. There is some documentation about how to
use it in the http://www.fil.ion.ucl.ac.uk/~john/misc/dartel_guide.pdf file
(or the SPM8b manual).
Best regards,
-John
-----Original Message-----
From: John Ashburner [mailto:[log in to unmask]]
Sent: Friday, October 17, 2008 10:14 AM
To: Dana Perantie; [log in to unmask]
Subject: Re: [SPM] combining non-linear warps
There's no tool for generating a new sn.mat file, but you can generate a
y_*.nii, which could be used for the same thing.
Best regards,
-John
On Thursday 16 October 2008 21:07, Dana Perantie wrote:
> Hello SPM list,
> Is there a way to combine non-linear warp parameters, i.e. if I warp A to B
> and B to C, is there a way to combine the *sn.mat files to make a *.mat
> representing the warp from A to C? Thank you,
> Dana
|