Extremely describes itself as “an online software made to simplify making maps with MapLibre GL JS utilizing knowledge from numerous file/question sorts.” In essence, it’s a instrument for turning geospatial knowledge from OSM, CSVs, or GeoJSON into interactive maps utilizing easy YAML “recipes” to outline knowledge sources, styling, and popups.
Utilizing Extremely, it’s doable to visualise geospatial knowledge from a number of sources, together with the Overpass API (OpenStreetMap), CSV/Google Sheets, and GeoJSON. In contrast to conventional Overpass queries, which solely fetch uncooked OSM knowledge, Overpass-Extremely gives a versatile interface for styling, filtering, and interacting with map options.
YAML
In Extremely, YAML (But One other Markup Language) is used as a map recipe to inform the applying what to map, learn how to type it, and the way customers can work together with it. This strategy makes it straightforward to show geospatial datasets into interactive, shareable maps with out writing customized code.
Extremely makes use of YAML to outline:
- Information sources – URLs for Overpass queries, CSV information, or different datasets.
- Map choices – preliminary zoom, heart coordinates, and controls like geolocation.
- Styling layers – how factors, traces, and polygons are rendered (circles, icons, arrows).
- Popups – HTML templates for what seems when a function is clicked, together with photos, textual content, and hyperlinks.
Examples
If this all sounds just a little complicated, it may assist to begin with some sensible examples. Discover these maps, examine their YAML “recipes,” and see when you can adapt them:
- London Artworks – regulate the middle coordinates to map photos of artworks in your city
- Classic Images of Richmond, VA – the YAML hundreds knowledge from a Google Sheet – examine the linked CSV to see how the info is structured and loaded
- UK Castles – hundreds fort knowledge from a GeoJSON file
(click on ‘Run’ in Extremely to view these maps!)
