Data items in the ARRAY_STRUCTURE_LIST_AXIS category describe
the physical settings of sets axes for the centres of pixels that
correspond to data points described in the
In the simplest cases, the physical increments of a single axis correspond
to the increments of a single array index. More complex organizations,
e.g. spiral scans, may require coupled motions along multiple axes.
Note that a spiral scan uses two coupled axis, one for the angular
direction, one for the radial direction. This differs from a
cylindrical scan for which the two axes are not coupled into one set.
Key Category Items
Items in Category array_structure_list_axis