code: def plot_row(self, treeview, path, view_column):
      (ind,) = path  # get the index into data
      points = self.data[ind, :]
      self.line.set_ydata(points)
      self.canvas.draw()
  
file_path: matplotlib/galleries/examples/user_interfaces/gtk4_spreadsheet_sgskip.py
imports: import gi
  from gi.repository import Gtk
  from numpy.random import random
  from matplotlib.backends.backend_gtk4agg import FigureCanvas
  from matplotlib.figure import Figure
label_desc: Use image node_id 2 for calling the DataManager obj's underlying member method code with example usage: obj.plot_row(treeview, path, view_column) without return types