feature: display image in the same plot instead of creating a new one

[johnnychen94]

JuliaImages/ImageShow.jl#29 tries to display a sequence of images to the plot pane. The plot count increases as we repeatedly call the play/explore function and thus requires a lot of memory.

Is there a way to not create a new plot for this job? Or maybe just keep the latest n plots?

Originally posted by @IanButterworth
I just noticed that in the example gifs, vscode appears to be creating a new plot per frame? Does it retain the old plots? That would be bad for memory usage

[pfitzseb]

Sure, you just gotta do it yourselves (e.g. via WebIO or some other custom JS you're communicating with).

[johnnychen94]

Hmmm, because ImageShow does not communicate with the IDE directly (it uses show(io, ::MIME"image/png", img) and display(img)), is it possible to add some custom keyword to display(e.g., new_plot=true)?

[davidanthoff]

I'm not keen on this, it seems if you want to show an animation that just requires a different display API than what we have at the moment.