Tick width and length not working

[vineetsoni]

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When I try to change the width and lenght of the ticks, it does not show any effect. However, the same works if one exports in PDF format.

Please have a look at the script below that would help you reproduce the issue:

import matplotlib.pyplot as plt
import numpy as np

N = np.zeros((512,512))

plt.rcParams['xtick.major.size'] = 10
plt.rcParams['xtick.minor.size'] = 5
plt.rcParams['xtick.major.width'] = 3
plt.rcParams['xtick.minor.width'] = 1.5
plt.rcParams['xtick.minor.visible'] = 'True'

plt.rcParams['ytick.major.size'] = 10
plt.rcParams['ytick.minor.size'] = 5
plt.rcParams['ytick.major.width'] = 3
plt.rcParams['ytick.minor.width'] = 1.5
plt.rcParams['ytick.minor.visible'] = 'True'

plt.imshow(N, cmap='gray', clim=(-1,0))

from matplotlib2tikz import save as tikz_save
tikz_save('tick.tex')

The output should look like:

However, with matplotlib2tikz, it looks like:

Worth noting: no minor ticks