matplotlib
Lignes de quadrillage et repères

Terrain avec lignes de quadrillage

Tracer avec des lignes de grille

import matplotlib.pyplot as plt

# The Data
x = [1, 2, 3, 4]
y = [234, 124,368, 343]

# Create the figure and axes objects
fig, ax = plt.subplots(1, figsize=(8, 6))
fig.suptitle('Example Of Plot With Grid Lines')

# Plot the data
ax.plot(x,y)

# Show the grid lines as dark grey lines
plt.grid(b=True, which='major', color='#666666', linestyle='-')

plt.show()

Tracer avec des lignes de quadrillage majeures et mineures

import matplotlib.pyplot as plt

# The Data
x = [1, 2, 3, 4]
y = [234, 124,368, 343]

# Create the figure and axes objects
fig, ax = plt.subplots(1, figsize=(8, 6))
fig.suptitle('Example Of Plot With Major and Minor Grid Lines')

# Plot the data
ax.plot(x,y)

# Show the major grid lines with dark grey lines
plt.grid(b=True, which='major', color='#666666', linestyle='-')

# Show the minor grid lines with very faint and almost transparent grey lines
plt.minorticks_on()
plt.grid(b=True, which='minor', color='#999999', linestyle='-', alpha=0.2)

plt.show()