Grid misplacement

[Koni2020]

Description

In some cases, I find that the grid plotted by the pcolormesh function exhibits misplacement at the bottom (as shown in the following figure). However, it only occurs when a large matrix (e. g. 50 x 50 matrix) is used. If a small matrix is used, it performs correctly. Is this a bug? How to fix it?

Code

import numpy as np
import proplot as pplt


ds = np.random.random([50, 50])
fig, axes = pplt.subplots(nrows=1, ncols=1)
axes.pcolormesh(ds)
fig.save('test.png')

Proplot version

matplotlib 3.4.3
proplot 0.9.7

[syrte]

do you get similar problem with matplotlib (without importing proplot)? it could be problem from upstream.

[Koni2020]

@syrte The matplotlib pcolor function performs correctly. So, what's the upstream?

Code

import numpy as np
import matplotlib.pyplot as plt


ds = np.random.random([50, 50])
plt.pcolor(ds)
plt.savefig('test.png')

Result

[syrte]

Would you try this and see it solves the problem

axes.pcolormesh(ds, edgefix=False)

[Koni2020]

@syrte Thanks for your help. The problem have been solved by passing edgefix=Fasle into the pcolor function.

[Ockenfuss]

I just discovered this problem as well (using ultraplot)! I opened an issue in ultraplot for it: Ultraplot/UltraPlot#136