class_docstr: Locations must have the base master at the origin (ie. 0).
  
  If the extrapolate argument is set to True, then values are extrapolated
  outside the axis range.
  
    >>> from pprint import pprint
    >>> locations = [       {'wght':100},       {'wght':-100},       {'wght':-180},       {'wdth':+.3},       {'wght':+120,'wdth':.3},       {'wght':+120,'wdth':.2},       {},       {'wght':+180,'wdth':.3},       {'wght':+180},       ]
    >>> model = VariationModel(locations, axisOrder=['wght'])
    >>> pprint(model.locations)
    [{},
     {'wght': -100},
     {'wght': -180},
     {'wght': 100},
     {'wght': 180},
     {'wdth': 0.3},
     {'wdth': 0.3, 'wght': 180},
     {'wdth': 0.3, 'wght': 120},
     {'wdth': 0.2, 'wght': 120}]
    >>> pprint(model.deltaWeights)
    [{},
     {0: 1.0},
     {0: 1.0},
     {0: 1.0},
     {0: 1.0},
     {0: 1.0},
     {0: 1.0, 4: 1.0, 5: 1.0},
     {0: 1.0, 3: 0.75, 4: 0.25, 5: 1.0, 6: 0.6666666666666666},
     {0: 1.0,
      3: 0.75,
      4: 0.25,
      5: 0.6666666666666667,
      6: 0.4444444444444445,
      7: 0.6666666666666667}]
docstr: Interpolate from deltas and scalars fetched from getScalars().
docstr_tok: ["Interpolate","from","deltas","and","scalars","fetched","from","getScalars","(",")","."]
code: def interpolateFromDeltasAndScalars(deltas, scalars):
      """Interpolate from deltas and scalars fetched from getScalars()."""
      return VariationModel.interpolateFromValuesAndScalars(
          deltas, scalars
      )
  
imports: from fontTools.misc.roundTools import noRound
  from .errors import VariationModelError
label_desc: Use image node_id 14 for calling the VariationModel obj's underlying member method code with example usage: obj.interpolateFromDeltasAndScalars(deltas, scalars) and returns: VariationModel