Remove margins from a matplotlib figure

Question

I'd like to plot a NumPy array using imshow in matplotlib and save it as a JPEG image. However, I can't manage to remove margins/paddings/borders from the image.

My code:

plt.imshow(np.arange(20).reshape(5,4)) ;
plt.axis('off')
plt.savefig('test.jpg', bbox_inches='tight', pad_inches=0, facecolor='black')

I've followed all recommendations that I could find here on Stackoverflow but none of them would help removing uneven white borders (I made them black in this figure) seen below:

Possible duplicate of [Removing white space around a saved image in matplotlib](https://stackoverflow.com/questions/11837979/removing-white-space-around-a-saved-image-in-matplotlib) — thedoctar, Oct 25 '19 at 11:59
Answer is here: https://stackoverflow.com/questions/11837979/removing-white-space-around-a-saved-image-in-matplotlib/27227718 — thedoctar, Oct 25 '19 at 11:59

score 0 · Answer 1 · answered Mar 24 '16 at 16:49

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setting pad_inches = -1 solved this for me (saving as png).

I suspect the pad_inches=0 was being interpreted as "falsey" and ignored

answered Mar 24 '16 at 16:49

welch

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Unfortunately this removes parts of the image as well. – John Manak Nov 25 '16 at 07:18

score 0 · Answer 2 · edited May 23 '17 at 12:24

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As it was described in this answer: https://stackoverflow.com/a/26610602/265289, it's important to also call:

fig.axes.get_xaxis().set_visible(False)
fig.axes.get_yaxis().set_visible(False)

alongside pad_inches=0. This removes the extra space to the left and bottom of the image.

edited May 23 '17 at 12:24

Community

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answered Nov 25 '16 at 07:26

John Manak

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Remove margins from a matplotlib figure

2 Answers2