Dymaxion world map with proportional circles and automatic legend in D3.js v5

The legend for proportional circles sizes is drawn automatically. Reprojectiong on the fly from WGS84 to the newly available AirOcean (Dymaxion projection) in D3v5. Example data: number of political reports sent by Swiss embasies to Bern in all languages and in French specifically betwee 1920 annd 1960. Basemaps are from here. Running D3 version of […]

Quantum GIS – Télécharger et visualiser des données

Téléchargez et installez qGIS si ce n’est pas déjà fait. Aller sur le portail SIG du canton de Genève, SITG > Cartes à personnaliser. Trouver et télécharger le fichier OCS_EMPLOI_COMMUNE en format ESRI Shape. Le trouver dans Données > Extraction. Sélectionner la région à l’aide de l’outil sélection. NB: toutes les communes ne peuvent pas […]

Colored proportional circles in ArcMap

Bivariate thematic mapping with ArcMap? Yes you can! Of course, you could also do it in D3.js (including a nice self-generated legend), or with much less effort in Quantum GIS (post in French). Whatever method you choose, colored proportional circles cannot be drawn directly on polygons, but you can draw them on points. Thus, all […]