2  Introduction

Arabesque is dedicated to origin-destination flow and network datasets. This second version enables data to be explored, filtered, geovisualised and represented. Arabesque lets you create flow maps from your own datasets, using a web browser running Mozilla, Chrome or Brave. It is based on current technological possibilities, in particular those offered by the new web visualization and mapping libraries (openlayers, d3, OSM, Turf, NaturalEarthData).

General keywords: cartography, filtering, flows, geovizualisation, matrice, semiology, spatial networks

2.1 Main steps

There are 5 main stages in creating a flowmap with Arabesque:

1. Importing your flowdata sets, in three ways :
   1. At least an Origin-Destination flow (OD) file with three columns (O,D, flows),in csv format ;
   2. A node file and a link/flow file in csv format ;
   3. A pre-saved workspace in .zip format
2. Processing flow data (automatic creation of indicators)
3. Statistical data exploration and configuration
   1. Numerical filtering of data
   2. Dealing with geography layers or tiles
4. Graphical symbolization (geometry and semiology)
5. Exporting a .pdf or saving the Arabesque workspace