Parameter setting before viewing (or how to change the default values?)

[yqshao]

Discription

Thanks first for the great widget, I tried to integrate it with ASE and it worked quit well. Here's some feature that I'm not very clear about. I tried to customize some settings for the view such as clipDepth ,quality..., however, setting the parameter only works if I excute it in the following cell, for example, this won't work:

import ase
import vasp
import nglview
model=ase.io.read('POSCAR')
view=nglview.show_ase(model)
view.clear_representations()
view.add_spacefill(radius_type='vdw',scale=0.7)
view.add_unitcell()
view.displayed=True
view.parameters = {"backgroundColor": "black"}
view

Therefore, it seems hard for me to 'generate' a desired widget. Correct me if I use the widget the wrong way, but is there any way to set a "default parameter" or change it befor a widget is shown?

Version report

python -c 'import nglview; print(nglview.__version__)'
0.6.2.1+11.gccbf561
python -c 'import ipywidgets; print(ipywidgets.__version__)'
5.2.2
python -c 'import traitlets; print(traitlets.__version__)'
4.3.1

[hainm]

hi,

that's the limitation of current implementation. We will fix that and ping you later. Thanks.

[hainm]

related to https://github.com/arose/nglview/issues/537

[hainm]

fixed in #555

Please give it a try.

[yqshao]

Cool, just exited to show how this could help in my workflow, and thanks again for this fix.

There might be some undesired behavior though, for example, when I used this combined layout, cell didn't show up in the first row. And the default orientation issue mentioned in #511. But I think the parameter setup is fine now.👍

[hainm]

cool. Feel free to make a PR for user example here