code: def maxabs(x, y):
      return np.max(np.abs(x - y))
  
imports: import numpy
  from numpy.testing import assert_equal
  from scipy import signal, stats
  from statsmodels.tsa.filters.filtertools import fftconvolveinv
label_desc: Use image node_id 2 for calling a global function with example usage: maxabs(x, y) and returns: np