Screenshots#
This page is a screenshot production checklist for highlighting and selection.
All blocks below use the standard “screenshot placeholder” spec from:
cellucid/markdown/DOCUMENTATION_SCREENSHOTS_AND_FIGURES_GUIDE.md
Recommended destination folder for real images:
cellucid-python/docs/_static/screenshots/highlighting_selection/
Orientation (where is Highlighting in the UI?)#
The Highlighting section contains the selection toolbelt (modes), page tabs, and the highlighted group list.#
Lasso selection (before/after)#
Hold Alt and draw a lasso; the outline shows the tentative region during selection.#
After releasing the lasso, Cellucid shows step controls so you can confirm, undo/redo, or cancel the selection.#
Confirm converts the current selection candidate set into a persistent highlight group on the active page.#
Highlight groups list (2–3 groups + enable/disable)#
The group list lets you enable/disable groups (without deleting) and remove or clear groups on the active page.#
Highlight pages UI (create/rename/recolor)#
Highlight pages are alternative workspaces; switching pages changes which highlight groups are active.#
Double-click a page tab name to rename the page (use clear names like “Control” or “Treated”).#
“Visible vs total” highlight count (filters hide highlighted cells)#
The highlight count distinguishes total highlighted membership from the subset currently visible in the view.#
Proximity and KNN (recommended)#
Proximity drag selects cells within an embedding-space radius around a seed point.#
KNN drag grows selection along the neighbor graph; degree increases as you drag farther.#
Common failure states (high value)#
KNN selection requires a connectivity graph; if it is missing, use other selection tools or re-export with connectivities.#
If highlight membership exists but no highlighted cells are visible, relax filters or switch to a view where those cells are visible.#