code: def area(x, y):
      polygon = Polygon(np.stack([x, y], axis=1))
      return float(polygon.area)
  
file_path: PaddleOCR/ppocr/utils/e2e_metric/polygon_fast.py
imports: import numpy
  from shapely.geometry import Polygon
label_desc: Use image node_id 1 for calling a global function with example usage: area(x, y) and returns: float