on_section: Observe events on story map section transitions

In mapgl: Interactive Maps with 'Mapbox GL JS' and 'MapLibre GL JS'

Observe events on story map section transitions

Description

For a given story_section(), you may want to trigger an event when the section becomes visible. This function wraps shiny::observeEvent() to allow you to modify the state of your map or invoke other Shiny actions on user scroll.

Usage

on_section(map_id, section_id, handler)

Arguments

map_id	The ID of your map output
section_id	The ID of the section to trigger on, defined in story_section()
handler	Expression to execute when section becomes visible.

mapgl documentation built on June 8, 2025, 1:57 p.m.