Determine Matplotlib axis size in pixels

To determine the axis size in pixels, we can take the following steps −

• Create a figure and a set of subplots, using subplots() method, fig and ax.

• To get the DPI, use fig.dpi. Print the details.

• Find bounding box in the display box.

• Find the width and height, using bbox.width and bbox.height.

• Print the width and height.

Example

from matplotlib import pyplot as plt

fig, ax = plt.subplots()
print("Dot per inch(DPI) for the figure is: ", fig.dpi)
bbox = ax.get_window_extent().transformed(fig.dpi_scale_trans.inverted())
width, height = bbox.width, bbox.height
print("Axis sizes are(in pixels):", width, height)

Output

Dot per inch(DPI) for the figure is: 100.0
Axis sizes are(in pixels): 4.96 3.696