md`# Learning to Code - Assignment One!`
d3 = require("d3@5")
topojson = require("topojson-client@3")
MNstate = FileAttachment("mn_state_WGS84.json").json()
MNstate_feature = topojson.feature(MNstate, MNstate.objects.mn_state_WGS84)
csv_data = d3.csvParse(await FileAttachment("Census2010_MN.csv").text(),({FIPS, Hispanic, TotalPop}) => [FIPS, [+Hispanic, +Hispanic/+TotalPop]])
//this is how to take the values of a variable (column) from all variables you created from the csv file
hispanicPCT = Array.from(csv_data.values(), d => d[1][1])
//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: ["Hispanic", "Hispanic 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.
