¥ NIfTI-1.1 (.nii or .nii.gz) is a new standard format that
AFNI, SPM, FSL, BrainVoyager, et al., have agreed upon
H Adaptation and extension of the old
ANALYZE 7.5 format
H Goal: easier interoperability of tools
from various packages
¥ All data is stored in 1 file (cf. http://nifti.nimh.nih.gov/)
H 348 byte header (extensions allowed; AFNI uses this feature)
H Followed by the image numerical
values
H Allows 1D-5D datasets of diverse
numerical types
H .nii.gz
suffix means file is compressed (with gzip)
¥ AFNI now reads and writes NIfTI-1.1
formatted datasets
H To write: when you give the prefix for the output filename, end it in Ò.niiÓ
or Ò.nii.gzÓ, and all AFNI programs
will automatically write NIfTI-1.1 format instead of .HEAD/.BRIK
H To read: just give the full filename
ending in Ò.niiÓ or Ò.nii.gzÓ