matplotlib : Raster Plot

[heiner55]

#!/usr/bin/python3
import operator
import matplotlib
import matplotlib.pyplot as plt

f = open('input.txt')
lines = f.readlines()
dict = {}
cnt = 1
for l in lines:
    ind = l[0]+l[2]+l[4]
    if ind not in dict:
        dict[ind] = cnt
        cnt = cnt + 1
sorted_dict = sorted(dict.items(), key=operator.itemgetter(1))
for t in sorted_dict:
    print(t)

plt.plot(*zip(*sorted_dict))
plt.show()