[BUG] Spectrum-at-spaxel tool raises JSON warnings in uncertainy viewer

[rosteen]

Jdaviz component

Cubeviz

Description

I was doing some testing with the updated MaNGA cube (https://stsci.box.com/shared/static/gts87zqt5265msuwi4w5u003b6typ6h0.gz) and noticed that when using the spectrum-at-spaxel tool in the uncertainty viewer, every mouse move resulted in a warning:

/Users/rosteen/opt/anaconda3/envs/viz_dev/lib/python3.12/site-packages/jupyter_client/session.py:721: UserWarning: Message serialization failed with:
Out of range float values are not JSON compliant: inf
Supporting this message is deprecated in jupyter-client 7, please make sure your message is JSON-compliant
  content = self.pack(content)

We should figure out how to handle this case better - there are infs in the uncertainty because we convert a 0 inverse variance to inf stddev, but it's all in masked locations.

How to Reproduce

Load linked file in Cubeviz, use the tool.

Expected behavior

No response

Browser

No response

Jupyter

No response

Software versions

No response

🐱

[pllim]

I bet it is here:

jdaviz/jdaviz/core/template_mixin.py

Line 4668 in 629fa62

def json_safe(column, item):

But how do you want to serialize a NaN to JSON? None, "nan", or ...?

[kecnry]

That's to add to a table, the bug mentioned above is for mouseover which shouldn't go through table.... but we likely need a generalized solution that works for both since the same issue would likely occur if using the markers plugin.