Where is the map, and what does it measure?

Paste the coordinates of your sensors or buildings. That is all the tool needs; everything else is drawn from OpenStreetMap.

How much of the city should show?

Each layer is set on its own. Less detail makes the orbs easier to read.

Which places will people recognise?

Ranked from OpenStreetMap by fame, size and type, with the reason for each. Nothing here is guessed by AI. Tick what belongs on the map.

Landmarks

Likely pollution sources

One style for every icon

These controls restyle every landmark at once, instantly, with no image generation.

Check the base map

This is the map before any data: boundary, streets, water, landmarks. If it reads well here, the orbs will too.

Connect the data

Visitors on the web can tap any orb to zoom in: a year of daily readings and live gauges for that spot.

Publish

Publishing freezes everything into one file: the drawn map, landmarks, style and data rules. The viewer never calls OpenStreetMap again.