Why do white lines occur in my plt image?

Question

I have a following problem. I plot an graph over a background image. Sometimes Spyder (my IDE) plots over the the image strange white horizontal and vertical lines. See graphs bellow.

This is what sometimes happens:

Desired output:

I use this code:

import matplotlib.pyplot as plt
from PIL import Image

img = Image.open("./myimg.png")
plt.imshow(img)

x = mydata[['Centroid1']]
y = mydata[['Centroid2']]

scatter = ax.scatter(x, y, s=20, alpha=0.3, color='red')
plt.show()

Do you know, how can I delete these white lines?

Did you try to hide the grid with `ax.grid(False)` ? – SpaceBurger Mar 01 '21 at 09:10 — SpaceBurger, Mar 01 '21 at 09:10

score 3 · Accepted Answer · answered Mar 01 '21 at 09:17

3

These white lines are the gridlines of you plot. I do not know why they appear but you can remove them with ax.grid(False).

Also, possible duplicate of How to hide axes and gridlines in Matplotlib (python).

answered Mar 01 '21 at 09:17

SpaceBurger

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Why do white lines occur in my plt image?

1 Answers1