Generating images in loop not working

[scottwsides]

I've seen the post about getting NGLView to export an image to a PNG file. The example show in NGLView works when changing representations in the same view that is being displayed in a separate cell. The code works for a single view as well. However if I put that code in a loop (I want to make lots of PNGs from different ngl view objects) then the separate view widgets never get displayed and the binary info that is in an object like im0 = view.render_image() ; im0.value--> is empty. Is there ANY way of getting the rendered binary info created without generating the widget. I've tried a number of things to hack this... but unless the viewer is explicitly generated in a separate cell.... the binary image info is not generated. How to fix?

• Version report

python -c 'import nglview; print(nglview.__version__)' ---> 3.03
python -c 'import ipywidgets; print(ipywidgets.__version__)' ----> 7.6.3

[hainm]

Is there ANY way of getting the rendered binary info created without generating the widget.

There is no way. You have to display the widget first.
But you can check this code of how to deal with multiple render_image calls. It might give you some ideas.
https://github.com/nglviewer/nglview/blob/master/docs/FAQ.md#how-to-make-nglview-view-object-write-png-file

[hainm]

You can use from IPython.display import display to programmatically display the view.

for view in [view0, view1]:
    display(view)

[scottwsides]

I of course saw the link you listed. HOwever, the Ipyhon display function does help. However the displayed NGLview widget object interacts in a funny way with the ipywidget 'Play' widget. I think I can make it work. *Dr. Scott W Sides* (303) 718-7028

…

On Sun, Oct 3, 2021 at 9:17 PM Hai Nguyen ***@***.***> wrote: You can use from IPython.display import display to programmatically display the view. for view in [view0, view1]: display(view) — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#999 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ADHTEK5C6QW5ECR74IJXCV3UFEMETANCNFSM5FFGKD6A> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.

[hainm]

Great.