md`# First Exercise: Population with Disabilities in U.S. Counties`
d3 = require("d3@5")
topojson = require("topojson-client@3")
cntydisbl = FileAttachment("lab1project.json").json()
county_features = topojson.feature(cntydisbl, cntydisbl.objects.lab1project)
csv_data = d3.csvParse(await FileAttachment("lab1project.csv").text(),({PID, tot_pop, tot_dis}) => [PID, [100*+tot_dis/tot_pop]])
//this is how to take the values of a variable (column) from all variables you created from the csv file
disablpct = Array.from(csv_data.values(), d => d[1][0])
//this is how you map the id column to the values. We will use this for joining with topojson later.
data = Object.assign(new Map(csv_data), {title: ["Disabilities", "Disabilities Pct"]})
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.
