import numpy as np
import sys

from matplotlib import pyplot as plt

data = np.loadtxt("path.txt", delimiter="\t")

fig, ax = plt.subplots()
point_a = data[0]
for point_b in data[1:]:
    if point_b[4]:
        ax.plot([point_a[2], point_b[2]], [point_a[1], point_b[1]], color='black')
    point_a = point_b

plt.gca().invert_yaxis()

plt.show()