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 master-values, and scalars fetched from
  getScalars(), which is useful when you want to interpolate
  multiple master-values with the same location.
docstr_tok: ["Interpolate","from","master-values",",","and","scalars","fetched","from","getScalars","(",")",",","which","is","useful","when","you","want","to","interpolate","multiple","master-values","with","the","same","location","."]
code: def interpolateFromMastersAndScalars(
      self, masterValues, scalars, *, round=noRound
  ):
      """Interpolate from master-values, and scalars fetched from
      getScalars(), which is useful when you want to interpolate
      multiple master-values with the same location."""
      deltas = self.getDeltas(masterValues, round=round)
      return self.interpolateFromDeltasAndScalars(deltas, scalars)
  
imports: from fontTools.misc.roundTools import noRound
  from .errors import VariationModelError
label_desc: Use image node_id 17 for calling the VariationModel obj's underlying member method code with example usage: obj.interpolateFromMastersAndScalars(masterValues, scalars) and returns: self