Visclaw plot window does not show in v5.9.1

[cpraveen]

I tried v5.9.1 and ran this https://github.com/clawpack/pyclaw/blob/d346bcd8303c10f9bb8f63e01fe498787ae4d2a0/examples/advection_1d/advection_1d.py

python advection_1d.py iplot=1

First I got this

/Users/praveen/Applications/clawpack/visclaw/src/python/visclaw/frametools.py:936: SyntaxWarning: "is not" with a literal. Did you mean "!="?
  elif pp['patch_bgcolor'] is not 'w':

I changed "is not" to "!=".

Then it runs without any error/warnings, but the plot window does not come up and there is no error/warnings.

I get the visclaw prompt and when I plot frames, no window comes up.

[ketch]

The issue you have with no plot appearing is definitely unrelated to the syntax warning. I believe it's also unrelated to Clawpack and should be an issue with your matplotlib setup. If you run a small Python script that generates a plot with matplotlib, does the plot appear?

[cpraveen]

I am able to plot with matplotlib.

With visclaw, it is behaving as if figure has been plotted but show() has not been called.

[cpraveen]

I also ran this inside ipython

from clawpack.pyclaw import examples
claw = examples.shock_bubble_interaction.setup()
claw.run()
claw.plot()

No plot window appeared, but when I come out of visclaw and back to ipython prompt, then the plot window was displayed.

[cpraveen]

My conda had installed latest matplotlib which is 3.8.0 and this seems to have some issue. Downgrading to 3.7.3 fixed the plot issue for me.

[mandli]

@cpraveen we may not want to close this quite yet if this is a problem with a new version of matplotlib.

[cpraveen]

I have seen this issue with matplotlib=3.8.0 on three different computers. Using previous version 3.7.3 works in each case.

[cpraveen]

I am not seeing this problem with matplotlib-3.8.1, so maybe this can be closed.