Add minor gridlines to matplotlib plot using seaborn

Question

I'm a fan of the Seaborn package for making nice-looking plots using Matplotlib. But I can't seem to figure out how to show minor gridlines in my plots.

import numpy as np import matplotlib.pyplot as plt import seaborn as sbn  x = np.linspace(0, 2 * np.pi, 100) y = np.sin(x)  fig, ax = plt.subplots(1, 1) ax.scatter(x, y)  ax.grid(b=True, which='major') ax.grid(b=True, which='minor') 

gives:

Any thoughts here? Also any thoughts on how to adjust the style of the Seaborn gridlines that do show up...in particular, I'd love to make them narrower.

Answer 1

Wound up combining CT Zhu's answer with tcaswell's hint:

import numpy as np import matplotlib as mpl import matplotlib.pyplot as plt import seaborn as sbn  x = np.linspace(0, 2 * np.pi, 100) y = np.sin(x)  fig, ax = plt.subplots(1, 1)  ax.scatter(x, y) ax.get_xaxis().set_minor_locator(mpl.ticker.AutoMinorLocator()) ax.get_yaxis().set_minor_locator(mpl.ticker.AutoMinorLocator()) ax.grid(b=True, which='major', color='w', linewidth=1.0) ax.grid(b=True, which='minor', color='w', linewidth=0.5)