#!/usr/bin/env python3

import sys

import numpy as np
import matplotlib.pyplot as plt
import matplotlib.animation as animation

fig, ax = plt.subplots()

data_path = sys.argv[1]
f = open(data_path)

# first line is x values
line = f.readline().strip()
if ',' in line:
    sep = ','
else:
    sep = ' '
x = np.fromstring(line, sep=sep)

# second line is y values at time 0
y = np.fromstring(f.readline().strip(), sep=sep)

graph, = ax.plot(x, y)

def animate(line):
    y = np.fromstring(line.strip(), sep=sep)
    print(np.max(y))
    graph.set_ydata(y)
    return graph,

ani = animation.FuncAnimation(fig, animate, f, interval=100, blit=True,
                              repeat=False)

plt.show()