Plot smoothing matplotlib and seaborn

I am trying to display my data in a nice way such as seen on the seaborn documentation:

Text

I am not too sure how to proceed. I managed to get the values of points and their respective standard deviation but it looks scattered while I just want to show a tendency:

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I look into here, and there trying to apply the proposed solution but I couldn't make it work.

Here is what I play with:

Final_array =         Mean       Std
0   0.739269  0.157892
1   0.807382  0.160464
2   0.800024  0.137239
3   0.825854  0.132472
4   0.864854  0.070544
..       ...       ...
95  0.797202  0.101961
96  0.747578  0.143394
97  0.751472  0.158651
98  0.587009  0.198987
99  0.728447  0.104601

sns.set(style="darkgrid", palette="muted", color_codes=True)
fig, ax = plt.subplots(figsize=(7,5))
y_pos = np.arange(Final_array.shape[0])
ax.errorbar(y_pos, Final_array[:,0], yerr=Final_array[:,1], elinewidth=0.5)
plt.show()

Does anyone have an idea? I am very beginner in using plots. Would it be possible to smooth? and get the nice overlay as in the seaborn image instead of the error bars?

These might be silly questions.

Kind regards,

Solution

You can use fillbetween for smoothed upper and lower curves. Choosing a higher sigma would give more smoothness.

Here is some example code:

import matplotlib.pyplot as plt
import numpy as np
from scipy.ndimage.filters import gaussian_filter1d

x = np.linspace(0, 100, 100)
y = 0.95 - ((50 - x) / 200) ** 2
err = (1 - y) / 2
y += np.random.normal(0, err / 10, y.size)

upper = gaussian_filter1d(y + err, sigma=3)
lower = gaussian_filter1d(y - err, sigma=3)

fig, ax = plt.subplots(ncols=2)

ax[0].errorbar(x, y, err, color='dodgerblue')

ax[1].plot(x, y, color='dodgerblue')
ax[1].fill_between(x, upper, lower, color='crimson', alpha=0.2)

plt.show()