Image not showing after saving

Question

I am trying to compute an image with points plotted on it, and it seems to work well when I am showing it :

fig = plt.figure(figsize=(18, 18))

ax = fig.add_subplot(222)
img = imageio.imread(stim_dir + image_name)

# Code to plot points

plt.title("fixation points of " + file_name)
plt.show()

It shows me the image I want, no worries. However, if I just add to this code

plt.savefig(result_dir + file_name + ".png", bbox_inches='tight')

Then it saves the image to the right folder, but it is all blank, without any title, any image, any points. Just blank. What could go wrong ?

score 3 · Accepted Answer · answered Oct 28 '19 at 15:49

3

You can change the order of plt.savefig(result_dir + file_name + ".png", bbox_inches='tight') and plt.show(). So if you first save the image and then show it, the saved image should not be blank anymore.

answered Oct 28 '19 at 15:49

Koralp Catalsakal

1,114
8
11

Oh it was this simple ! Thank you. Do you know why it happens, do the "plot" closes when we show it ? – Sanimys Oct 28 '19 at 15:51
1

@Sanimys `plt.show` clears the figure you built. – Right leg Oct 28 '19 at 15:52

Image not showing after saving

1 Answers1