code: def vals_missing_plot_list_cmap(binned_array, listed_cmap):
      """Returns a normalized imshow plot using a 3 value array w vals 2,3,4."""
  
      cmap, norm = listed_cmap
      bins, arr = binned_array
  
      arr[arr == 1] = 2
      arr[arr == 5] = 4
  
      f, ax = plt.subplots(figsize=(5, 5))
      return ax.imshow(arr, cmap=cmap, norm=norm), arr
  
imports: import numpy
  import pytest
  import matplotlib
  import matplotlib.pyplot
  from matplotlib.colors import ListedColormap
  import earthpy.plot
label_desc: Use image node_id 6 for calling a global function with example usage: vals_missing_plot_list_cmap(binned_array, listed_cmap) and returns: ax,  arr