v2: Unexpected behaviour in postagestamp PNG output (matplotlib v3.3.0)

[ddobie]

Passing bbox_inches="tight" to plt.savefig() results in the figure title being cut off:

Using fig.set_tight_layout(True) results in the x axis being cut off:

It looks like constrained_layout should handle this (https://matplotlib.org/3.1.1/tutorials/intermediate/constrainedlayout_guide.html) but it's still experimental. I've tried it and it cuts everything off.

[ajstewart]

What I don't understand is that this wasn't happening before? Are you on the same matplotlib version? I see 3.3.0 was released 10 days ago.

Only other thing is to check the multiprocessing is not messing this up.

[ddobie]

You're right - I upgraded to 3.3.0. I've downgraded and the issue is solved.

[ajstewart]

On 3.3.0 does it work if you ask for no colorbar?

[ddobie]

Doesn't seem to :(

[ajstewart]

Ok then I guess a temp solution to this is that we set matplotlib to a max of 3.2.2, but leave this issue open.

We should also try and report to matplotlib, I wonder if you get the same with a simple plot?

[ddobie]

Currently requirements.txt currently specifies matplotlib<=3.1.2. If I run pip install -r requirements.txt followed by pip install . I get 3.1.2. If I simply run pip install . then the required packages are installed but I get 3.3.0. Not sure if that's a bug or (more likely) a misunderstanding on my part.

[ajstewart]

Currently requirements.txt currently specifies matplotlib<=3.1.2. If I run pip install -r requirements.txt followed by pip install . I get 3.1.2. If I simply run pip install . then the required packages are installed but I get 3.3.0. Not sure if that's a bug or (more likely) a misunderstanding on my part.

Looks like the setup.py is not consistent, matplotlib there is >=3.1.2 but smaller than 4.0.

[ddobie]

Pretty sure this can be closed

[ajstewart]

Just a note here that this is fixed when testing matplotlib v3.4.1.