code: def converter_isomap(data_fname):
      from shogun import CSVFile
      from shogun import Isomap
  
      features = sg.create_features(CSVFile(data))
  
      converter = Isomap()
      converter.set_k(20)
      converter.set_target_dim(1)
      converter.transform(features)
  
      return features
  
label_desc: Use image node_id 1 for calling a global function with example usage: converter_isomap(data_fname) and returns: features