See tidync for detail about the object, and
hyper_vars for programmatic access to the active grid's
variable and dimension information.
The print summary is organized in two sections, the first is available grids
(sets of dimensions) and their associated variables, the second is the
dimensions, separated into active and inactive. All dimensions may be active
in some NetCDF sources.
Individual active dimensions include the following components: * 'dim' -
dimension label, D0, D1, D2, ... * 'name' - dimension name * 'length' -
size of the dimension * 'min' - minimum value of the dimension * 'max' -
maximum value of the dimension * 'start' - start index of subsetting *
'count' - length of subsetting index * 'dmin' - minimum value of the
subset dimension * 'dmax' - maximum value of the subset dimension * 'unlim'
The inactive dimension summary does not include 'start', 'count', 'dmin',
'dmax' as these are identical to the values of 1, 'length', 'min', 'max' when
no array subsetting has been applied.