HDataset stored as
columns of ASCII-formatted numbers Þ .1D and .3D files
åUsed
to store datasets when knowing where the data points are in space isnÕt important for the analysis
åExample:
node-wise analysis of group data on surfaces
åEach
column corresponds to one sub-brick
åEach
row corresponds to one voxel or node
å.1D
files: just columns of numbers
å.3D
files: contain an XML header with geometrical information
HNIfTI-1 format Þ .hdr/.img file pairs or .nii
files
åNew
format, modified from ANALYZE 7.5 compatible programs
åSupposed
to be mostly compatible with ANALYZE 7.5 compatible programs
åFormat
finalized late 2003; will be supported by SPM, AFNI, FSL, Brain Voyager
¥Method 4: Output of most AFNI programs is AFNI-formatted
datasets Þ .HEAD/.BRIK file
pairs
HAFNI utility
programs exist to re-write AFNI-formatted datasets into ANALYZE, MINC, and .3D formats
HIn the future, AFNI
programs will be able to write out NIfTI-1 .nii
formatted datasets directly