class_docstr: Class for loading data.
docstr: Calculate the normalizing factor explained in appendix of sketch-rnn.
docstr_tok: ["Calculate","the","normalizing","factor","explained","in","appendix","of","sketch-rnn","."]
code: def calculate_normalizing_scale_factor(self):
      """Calculate the normalizing factor explained in appendix of sketch-rnn."""
      data = []
      for i in range(len(self.strokes)):
          if len(self.strokes[i]) > self.max_seq_length:
              continue
          for j in range(len(self.strokes[i])):
              data.append(self.strokes[i][j, 0])
              data.append(self.strokes[i][j, 1])
      data = np.array(data)
      return np.std(data)
  
imports: import random
  import numpy
label_desc: Use image node_id 5 for calling the DataLoader obj's underlying member method code with example usage: obj.calculate_normalizing_scale_factor() and returns: np