statsmodels_lowess.py

import numpy as np
import pandas as pd
import matplotlib.pyplot as plt
from ggplot import meat
from statsmodels.nonparametric.smoothers_lowess import lowess

df = meat[['beef','veal']]
df = df.sort_index(by=['beef'])
x = meat.beef.values
y = meat.veal.values

x_loess, y_loess = lowess(y, x).T

plt.scatter(x, y)
plt.plot(x_loess, y_loess)