docstr: Spacings the sub-sampled image must have at a particular level.
  
  Returns the spacings (voxel sizes) the sub-sampled image must have at a
  particular resolution of the scale space (note that this object does
  not explicitly subsample the smoothed images, but only provides the
  properties the sub-sampled images must have).
  
  Parameters
  ----------
  level : int, 0 <= from_level < L, (L = number of resolutions)
      the scale space level to get the sub-sampled shape from
  
  Returns
  -------
  the spacings (voxel sizes) at the requested resolution or None if an
  invalid level was requested
docstr_tok: ["Spacings","the","sub-sampled","image","must","have","at","a","particular","level",".","Returns","the","spacings","(","voxel","sizes",")","the","sub-sampled","image","must","have","at","a","particular","resolution","of","the","scale","space","(","note","that","this","object","does","not","explicitly","subsample","the","smoothed","images",",","but","only","provides","the","properties","the","sub-sampled","images","must","have",")",".","Parameters","--","--","--","--","--","level",":","int",",","0","<","=","from_level","<","L",",","(","L","=","number","of","resolutions",")","the","scale","space","level","to","get","the","sub-sampled","shape","from","Returns","--","--","--","-","the","spacings","(","voxel","sizes",")","at","the","requested","resolution","or","None","if","an","invalid","level","was","requested"]
code: def get_spacing(self, level):
      """Spacings the sub-sampled image must have at a particular level.
  
      Returns the spacings (voxel sizes) the sub-sampled image must have at a
      particular resolution of the scale space (note that this object does
      not explicitly subsample the smoothed images, but only provides the
      properties the sub-sampled images must have).
  
      Parameters
      ----------
      level : int, 0 <= from_level < L, (L = number of resolutions)
          the scale space level to get the sub-sampled shape from
  
      Returns
      -------
      the spacings (voxel sizes) at the requested resolution or None if an
      invalid level was requested
  
      """
      return self._get_attribute(self.spacings, level)
  
imports: import logging
  from dipy.align import floating
  import numpy
  import numpy.linalg
  from scipy.ndimage import gaussian_filter
label_desc: Use image node_id 7 for calling the ScaleSpace obj's underlying member method code with example usage: obj.get_spacing(level) and returns: self