In SPM2, the Defaults button should allow you to change the number of basis functions for nonlinear registration to zero. For more about this, a search through http://www.jiscmail.ac.uk/cgi-bin/webadmin?S1=spm for the keywords "affine only" should give you loads of hits. Best regards, -John On Thursday 22 September 2005 08:54, kamran kazemi wrote: > Dear SPMers > > how we can do only affine normalization? it mean normalization with only > linear mapping? > > Kind Regards > kamran > > > --------------------------------- > Yahoo! for Good > Click here to donate to the Hurricane Katrina relief effort.