Define the size of a grid on a plot using Matplotlib

To define the size of a grid on a plot, we can take the following steps −

Create a new figure or activate an existing figure using figure() method.
Add an axes to the figure as a part of a subplot arrangement.
Plot a curve with an input list.
Make x and y margins 0.
To set X-grids, we can pass input ticks points.
To lay out the grid lines in current line style, use grid(True) method.
To display the figure, use show() method.

Example

from matplotlib import pyplot as plt
plt.rcParams["figure.figsize"] = [7.00, 3.50]
plt.rcParams["figure.autolayout"] = True
fig = plt.figure()
ax = fig.add_subplot(111)
ax.plot([0, 2, 5, 8, 10, 1, 3, 14], 'ro-')
ax.margins(x=0, y=0)
grid_points = [1., 2., 3., 10.]
ax.xaxis.set_ticks(grid_points)
ax.grid(True)
plt.show()