// Topojson base map, joined file, départements with id (in arbitrary order)
fond=FileAttachment("fond2sq.json").json()
pathLeft=d3.geoPath(projectionLeft)
pathRight=d3.geoPath(projectionRight)
import{legend}from"@d3/color-legend"
import{radio}from"@jashkenas/inputs"
import{slider}from"@jashkenas/inputs"
import{color}from"@jashkenas/inputs"
Purpose-built for displays of data
Observable is your go-to platform for exploring data and creating expressive data visualizations. Use reactive JavaScript notebooks for prototyping and a collaborative canvas for visual data exploration and dashboard creation.