Clean matplotlib figure without frame, margins, axes

Question

I need a figure without labels, axes, and frame - just the pure data plot.

For example:

import matplotlib.pyplot as plt

fig, ax = plt.subplots()
ax.set_facecolor('green')
ax.plot(range(0, 10), c='red')

creates this plot

The problems:

1. Option removes the ticks and labels but a small black frame remains.

    ax.xaxis.set_visible(False)
    ax.yaxis.set_visible(False)
   

2. Option removes the background and still leaves a white margin.

    ax.axis('off') 
    fig.tight_layout(pad=0)
   

3. Option removes everything I want but also the background:

    fig.patch.set_visible(False)
   

Other solutions like this one don't work as well.

Any ideas?

Answer 1

You can remove the white margins with subplots_adjust and the frame with spines.set_visible:

import matplotlib.pyplot as plt

fig, ax = plt.subplots()
ax.set_facecolor('green')
ax.plot(range(0, 10), c='red')

plt.subplots_adjust(left=0, bottom=0, right=1, top=1)
ax.spines['top'].set_visible(False)
ax.spines['right'].set_visible(False)
ax.spines['bottom'].set_visible(False)
ax.spines['left'].set_visible(False)

plt.show()

Output: