import matplotlib.pyplot as plt
import os.path

import tephi

dew_point = os.path.join(tephi.DATA_DIR, 'dews.txt')
dry_bulb = os.path.join(tephi.DATA_DIR, 'temps.txt')
column_titles = [('pressure', 'dewpoint'), ('pressure', 'temperature')]
dew_data, temp_data = tephi.loadtxt(dew_point, dry_bulb, column_titles=column_titles)
dews = zip(dew_data.pressure, dew_data.dewpoint)
temps = zip(temp_data.pressure, temp_data.temperature)

tpg = tephi.Tephigram()
tpg.plot(dews)
tpg.plot(temps)
plt.show()