i am working on a 2 stage transform for anatomical data: stage 1 uses FSL's flirt and outputs a .mat affine transform matrix. stage 2 uses 3dTagalign and outputs a .matvec matrix. i want to apply the combined affine trasnform to functional data in one stage so as to minimize interpolation errors. to do this, i need to concatenate the FSL .mat from stage 1 to the AFNI format .matvec in stage 2....
this concatenated matrix will be applied by 3dWarp to a functional AFNI format dataset.
thanx
-vitaly