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Chapter View

Chapter View Help

Interactive map for American Red Cross community mobilization

🗺 Getting Started

Layers (top-left) Open the layer panel to toggle data layers on and off. Layers are organized by group with visibility counts.
Open (top-right) Open the info panel for Feature Info, Legend, Swipe Compare, and Search tools.
Click any feature Click a feature on the map to see its details in the Feature Info panel. The panel opens automatically.
Navigation tabs Switch between Home, Fundraising, Risk Map, and Feedback views using the header tabs.

🛠 Tools

Feature Info Click any feature to see its popup details in the right panel. Click CLEAR to reset. Updates with each click.
Search Search for counties, chapters, regions, or divisions by name. Filter by geography type. Click a result to zoom.
Swipe Compare Enable swipe mode, then assign visible layers to the Left or Right side of a draggable divider to compare data.
Legend Shows symbology for all visible layers. Updates automatically as you toggle layers on and off.
🔒 Security & Data
This app is built on ArcGIS Maps SDK for JavaScript — the same mapping engine that powers Experience Builder. Your data never leaves ArcGIS Online. Authentication uses Esri's OAuth flow (same security as EB). GitHub Pages serves only the HTML/CSS/JS — it has zero access to your AGOL data. The browser fetches data directly from Esri's servers after you authenticate. Anyone who opens this app still needs a valid Red Cross AGOL credential to see anything.

Performance: This app uses lazy loading — data layers are only fetched from Esri's servers when you turn them on. With 50+ layers in the map, this means startup loads only what's visible by default, rather than firing 50 simultaneous service requests. Turning a layer off releases its memory. This is a key advantage of the SDK over Experience Builder, which loads all layers on startup regardless of visibility.

Map Info

▶ Feature Info
📍
Click a feature on the map
to see its details here
▶ Legend
▶ Swipe Compare
Enable Swipe
Click L or R to assign a layer to the left or right side of the divider. Click again to unassign.
▶ Search
All
Counties
Chapters
Regions
Divisions
Type to search...
▶ Near Me
Circle
County
Chapter
Draw Area
Click the map to set the center point
miles