Joel Ostblom

**(1) Issue/Bug Description:** When tiling the main zoom window it also causes tiling of all the Zoom pop ups, such as "X started screen sharing". This is quite annoying as...

Collapse traceback and show only error message

4

Commonly, the most important information of what went wrong in a cell is contained the error message, which currently is shown after a long traceback output. It would be great...

### Describe the bug **context** When I create a book using this minimal `_config.yml`, the logo shows up as bigger than expected and covers the title in the side bar....

Support testing code and displaying feedback for interactive coding exercises

3

I am interested in creating coding exercises as part of a text book and I'm trying to explore if jupyterlite can be used for this purpose. The criteria I have...

Support ppi argument

2

Vega-Lite 5.8 added support for a `ppi` argument to their CLI in https://github.com/vega/vega-lite/pull/8854. Being able to control the ppi of a figure is quite useful since that would give higher...

Standardize syntax for parameter values in the docstrings

1

This is a low priority observation. Currently we use a mix of double (formatted as code) and single (formatted as italics) backticks in doc strings. E.g. the `Chart` page formats...

Support `alt.datum[signal_name]` in addition to `"datum[signal_name]"`

6

Currently using `alt.datum` in altair does not support passing a signal/parameter whereas writing the expression string directly as JS-like string does (an example of dynamically passing fields via parameters here...

Add gallery example of adjustable bin sizes

2

I saw this cool example from @dwootton and think it could be cool to have in the altair example gallery (it's even cooler when the adjusting is bound to zooming...

Unicode arrow shows as question mark in thumbnail

3

The unicode arrow ([`"🠃"`](https://www.compart.com/en/unicode/U+1F803)) example shows a question mark in the [thumbnail](https://altair-viz.github.io/gallery/index.html#line-charts):  The actual example still shows the correct chart: 

I [answered this on SO](https://stackoverflow.com/questions/77859278/how-to-draw-a-diagonal-line-with-mark-rule-that-stretches-to-infinity-in-altair/77862151#77862151) and thought it could be good to include this in the docs Feel free to add a PR to the [rule page](https://altair-viz.github.io/user_guide/marks/rule.html#width-height-spanning-rules) ## Answer Yes,...