# 2D-kromme import matplotlib.pyplot as plt import numpy as np fig = plt.figure (figsize = (7, 7)) data = np.loadtxt ('020106000072_864.txt') ax = fig.add_subplot () ax.set_aspect ("equal") ax.set_xlim ([-4, 4]) ax.set_ylim ([-4, 4]) plt.plot (data[:,0], data[:,1], color = "red") plt.show ()