import matplotlib.pyplot as plt
import numpy as np
import pandas as pd

class data_graphs:
    def __init__(self, filename):
        self.data = pd.read_csv(filename, delim_whitespace = True, header = None)
        self.x1 = self.data[1]
        self.x2 = self.data[2]
        self.y1 = self.data[3]
        self.filename = filename


    def graph_x1(self):
        self.x1_fig = plt.figure()
        plt.plot(self.x1.as_matrix(), self.y1.as_matrix())
        plt.title(self.filename)
        plt.show()

    def graph_x2(self):
        self.x2_fig = plt.figure()
        plt.plot(self.x2.as_matrix(), self.y1.as_matrix())
        plt.title(self.filename)
        plt.show()


graphs = []

for i in range(1):
    filename = "dn%02d.txt"%(i+1)
    print(filename)
    graphs.append(data_graphs(filename))