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Dataset Contents: Numbers
¥ Different types of
numbers can be stored in datasets
H 8 bit bytes (e.g., from grayscale photos)
H 16 bit shorts (e.g., from MRI scanners)
² Each sub-brick may also have a floating point scale factor a attached, so that the ÒtrueÓ value in each
voxel is actually a×(value in dataset file)
H 32 bit floats (e.g., calculated values)
H 24 bit RGB color triples (e.g., from your digital
camera!)
H 64 bit complex numbers (e.g., for the physicists in the
room)
¥ Different sub-bricks are allowed to have different numeric types
H But this is not recommended
H Will occur if you ÒcatenateÓ two dissimilar datasets together
(e.g.,
using 3dTcat or 3dbucket commands)
