Hi. I'm Nicolas Lambert, research engineer in geographic information science at CNRS (France). My job is to draw maps and teach cartography at the university. I am a geographer 🌎, and not really a developer 🖥️
map = bertin.draw({
params: { projection: d3.geoCylindricalEqualArea() },
layers: [
{
type: "text",
position: "bottomleft",
text: `world's largest cities
population > ${threshold / 1000000} million inh.`,
margin: 10,
frame_fill: "#a31d88",
fontFamily: "Rubik",
fill: "white",
fontSize: 20,
fontWeight: "bold"
},
{
type: "spikes",
geojson: spikes,
values: "population",
fillOpacity: 0.2,
k: k,
w: w,
leg_x: 80,
leg_y: 200,
//leg_fontSize2: 7,
//leg_round: -2,
leg_title: `Number of
inhabitants`,
tooltip: ["$admin_name", "$population", "inh."]
},
{
type: "layer",
geojson: countries,
fill: "white",
fillOpacity: 0.5,
stroke: "none"
},
{ type: "graticule" },
{ type: "outline" }
]
})
bertin = require("bertin@latest")
Type JavaScript, then Shift-Enter. Ctrl-space for more options. Arrow ↑/↓ to switch modes.
d3 = require("d3@7", "d3-geo-projection@4")
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.
