set x = `cat bvecs | awk '{if (NR==1) print}'` set y = `cat bvecs | awk '{if (NR==2) print}'` set z = `cat bvecs | awk '{if (NR==3) print}'`
@ k = 1 while ( $k <= `head -1 bvecs|wc -w` ) echo $x[$k] $y[$k] $z[$k] @ k = $k + 1 end
I'd make sure though dcm2nii doesn't L-R flip the gradient vectors, I think there was a thread recently that suggested it might.
On Wed, 7 Aug 2013, Salil Soman wrote:
Hi, I have dicoms that I turn to nifti using dcm2nii (with the default settings plus anonymization option turned on [-a y]). The bvec files it generates by default are 3 rows by n columns (where n is b0 number + directions). I am under the impression tracula requires this to be converted to a n row by 3 column file. 1) is this correct, 2) is there a preferred way to perform this transformation on linux systems?
Thanks you,
-Sal