Over the past few months we have built a whole new Flourish mapping system. The aim was to take the best open-source technology and make it easy to use for anyone with a spreadsheet, without coding. The new templates visualise data and highlight locations above gorgeous customisable vector background maps.
Today we are releasing the first of many templates to grow out of this work: a three-dimensional “Arc map” for visualising any kind of flow data, from financial transfers between cities to a refugee’s migration path. Here’s an example showing a month of Citibike trips in New York City.
As with all Flourish templates, you can create a visualisation in this style by uploading a spreadsheet in the right format. Check out the requirements and get started.
Among other things, the template allows you to:
- Choose the style of background map
- Change the color and width of the arcs based on columns in your data
- Allow the user to “brush” over the map to highlight flows in certain areas
- Animate around the map in a Flourish story to create a narrative
The data visualisation layer of this template makes use of deck.gl, a powerful open-source codebase created by the talented visualisation team at Uber. Like most of our new map templates, this one also uses Mapbox GL for rendering background maps, the data for which comes from OpenStreetMap. We’re grateful to the many developers who have contributed to these projects.