Documentation: Flags to set notebook-wide default behavior

[gsaurabhr]

This is a continuation of the enhancement fixed with #134 . The fix in #134 allows hiding the figure headers by setting a figure-specific flag:

f = plt.figure()
f.canvas.header_visible = False

A further enhancement would be to not have to do this for every figure, but set the default behavior via a global flag, for example, something similar to mpl.rcParams for ipympl. This could potentially be useful for other global behaviors of the package.

[martinRenou]

One thing I realized today is that you can actually do it, thanks to traitlets.

You can do:

from ipympl.backend_nbagg import Canvas

Canvas.header_visible.default_value = False

[gsaurabhr]

Perfect, thank you, that works!

[martinRenou]

Sure :) Let's keep your issue opened until this is properly documented somewhere

[gsaurabhr]

Just wanted to link this to #208.

[martinRenou]

Thanks, this really need to be done. I'll try to take some time to do it at some point.

[mlt]

You can do:

from ipympl.backend_nbagg import Canvas
Canvas.header_visible.default_value = False

Any solution for Jupyter Lab as nbagg does not work there?

[ianhi]

Any solution for Jupyter Lab as nbagg does not work there?

The quoted code will work in either jupyter lab or jupyter notebook. The name backend_nbagg is a relic of where the ipympl code came from

[mlt]

Nope... Do I drop it at the wrong place??

[ianhi]

huh - indeed that doesn't seem to work - I wonder if some update must've broken it along the way.

I suspect in this case that there is a conflict between the typescript defaults and the python defaults of these traits and somehow the typescript side is winning.

[s-bien]

Is the notebook-wide flag going to be fixed for Jupyter Lab?