How to plot a simple 3D point cloud without any map and update it regularly?

[mathcatsand]

To your point 5, you may be interested in the discussion about changing keyed widget behavior. Session state “losing” parameters is tied to the widget cleanup process and I’m guessing that’s what you came across. Namely, when a widget is not rendered on the screen, it’s data gets deleted (including its value in session state). This is entirely expected, and you mentioned a solution that “interrupts” the cleanup process thereby keeping the keys. (My usual preferred solution is to treat all data assigned to widget keys as transient and have separate keys for keeping data between pages. This also keeps the solution on the page with the affected key and doesn’t require a copy-paste script at the top of every page in the app. )

Keyed widget state persistence - discussion, possible fixes

Hi all! TL;DR: Take a look at the example app and let us know how it impacts you, and what you think about how to fix this issue! Discussion on GitHub here: #6074 One of the current Streamlit behaviors that causes confusion for many of us is how widgets with key='foo' lose their session_state value when they are not rendered in a given run. It seems to come up most often with multipage apps that have some state dependency between pages, but also possible in a single page app with conditional …