code: def make_grid(x, y, h=0.02):
      x_min, x_max = x.min() - 1, x.max() + 1
      y_min, y_max = y.min() - 1, y.max() + 1
      xx, yy = np.meshgrid(
          np.arange(x_min, x_max, h), np.arange(y_min, y_max, h)
      )
      return xx, yy
  
file_path: DESlib/examples/plot_example_P2.py
imports: import matplotlib.pyplot
  import numpy
  from sklearn.ensemble import AdaBoostClassifier, RandomForestClassifier
  from sklearn.model_selection import train_test_split
  from sklearn.neural_network import MLPClassifier
  from sklearn.svm import SVC
  from sklearn.tree import DecisionTreeClassifier
  from deslib.dcs.ola import OLA
  from deslib.dcs.rank import Rank
  from deslib.des.des_p import DESP
  from deslib.des.knora_e import KNORAE
  from deslib.static import StackedClassifier
  from deslib.util.datasets import make_P2
label_desc: Use image node_id 1 for calling a global function with example usage: make_grid(x, y, h) and returns: xx,  yy