Question 1

How to plot real-time GPS data on Node-RED worldmap?

Accepted Answer

Send a message to the worldmap node with a payload containing name, lat, lon, and optional properties like speed and heading. The marker updates dynamically as new messages arrive, enabling live tracking of vehicles or devices.

Question 2

Can I use custom map tiles with node-red-contrib-web-worldmap?

Accepted Answer

Yes, you can add custom base layers or overlays by sending a command message with map details, including URLs for tile servers or local files (e.g., PMtiles), and options for WMS or other formats, as shown in the 'Controlling the map' section.

Question 3

Node-RED worldmap vs using Leaflet directly – which is better?

Accepted Answer

Node-RED worldmap is better for quick integration within Node-RED flows, offering pre-built nodes for map control and event handling. Using Leaflet directly provides more flexibility but requires custom JavaScript coding outside Node-RED.

Question 4

How to add interactive buttons to the map?

Accepted Answer

Use the command.button property in a message to define custom buttons with names and icons; when clicked, they send events to the worldmap-in node, allowing you to trigger actions in your flow based on user interaction.

Question 5

What's the best way to handle offline maps in Node-RED?

Accepted Answer

Use PMtiles files placed in the Node-RED user directory or run a local map server like Tileserver-gl via Docker, then configure the worldmap node to use these sources, as explained in the 'Serving maps' section for offline deployments.

Question 6

How to style GeoJSON layers in the worldmap node?

Accepted Answer

Include style properties in the GeoJSON feature or use the opt property in the command.map object to define stroke, fill, and other Leaflet-compatible styles, ensuring clickable is set to true for popups if needed.

web-worldmap

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