I'd like to convert individual FA timepoints t1 and t2 to standard space using transformation files produced by running tbss on the average FA map
I've tried the following two approaches :
1. applywarp -i sub01_FA_t1 -o sub01_FA_t1_std -r MNI152_T1_1mm_brain -w sub01_avg_FA_to_target.nii.gz --premat=target_to_MNI152.mat
This gives me an error : An error occurred while reading file: sub01_avg_FA_to_target.nii.gz
2. applywarp -i sub01_FA_t1 -o sub01_FA_t1_std -r MNI152_T1_1mm_brain -w sub01_avg_FA_to_sub05_avg_FA_warp --premat=target_to_MNI152.mat
where sub05_avg_FA is the best target. This runs but the output image doesnt seem correct.
Any ideas with regards to what i may be doing wrong?