class_docstr: Class to wrap MINC1 format opened netcdf object
  
  Although it has some of the same methods as a ``Header``, we use
  this only when reading a MINC file, to pull out useful header
  information, and for the method of reading the data out
docstr: Get scalar value from NetCDF scalar
docstr_tok: ["Get","scalar","value","from","NetCDF","scalar"]
code: def _get_scalar(self, var):
      """Get scalar value from NetCDF scalar"""
      return var.getValue()
  
imports: from __future__ import annotations
  from numbers import Integral
  import numpy
  from .externals.netcdf import netcdf_file
  from .fileslice import canonical_slicers
  from .spatialimages import SpatialHeader, SpatialImage
label_desc: Use image node_id 8 for calling the Minc1File obj's underlying member method code with example usage: obj._get_scalar(var) and returns: var