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 🖥️
maplibregl = {
const [module, styleURL] = await Promise.all([
require("maplibre-gl@3.1.0"),
require.resolve("maplibre-gl@3.1.0/dist/maplibre-gl.css")
]);
const style = document.head.appendChild(
html`<link rel=stylesheet href=${styleURL}>`
);
invalidation.then(() => style.remove());
return module;
}
Paris = {
const container = yield html`<div style="height:800px;">`;
const map = (container.value = new maplibregl.Map({
boxZoom: true,
pitch: 0,
bearing: 0,
maplibreLogo: true,
container,
center: [2.3374205901589185, 48.8581402090239],
zoom: 12,
style: "https://basemaps.cartocdn.com/gl/voyager-gl-style/style.json",
scrollZoom: true
}));
map.addControl(new maplibregl.NavigationControl());
}
//mystyle = FileAttachment("mystyle.json").json()
viewof mystyle = Inputs.select(
new Map([
["night", "https://geoserveis.icgc.cat/contextmaps/night.json"],
["fulldark", "https://geoserveis.icgc.cat/contextmaps/fulldark.json"],
["voyager", "https://basemaps.cartocdn.com/gl/voyager-gl-style/style.json"],
["positron", "https://geoserveis.icgc.cat/contextmaps/positron.json"],
["icgc", "https://geoserveis.icgc.cat/contextmaps/icgc.json"],
["osmbright", "https://geoserveis.icgc.cat/contextmaps/osm-bright.json"],
["hibrid", "https://geoserveis.icgc.cat/contextmaps/hibrid.json"]
]),
{ label: "Style" }
)
Paris2 = {
const container = yield html`<div style="height:800px;">`;
const map = (container.value = new maplibregl.Map({
boxZoom: true,
pitch: 0,
bearing: 0,
maplibreLogo: true,
container,
center: [2.3374205901589185, 48.8581402090239],
zoom: 12,
style: mystyle,
scrollZoom: true
}));
map.addControl(new maplibregl.NavigationControl());
}
d3.json("https://geoserveis.icgc.cat/contextmaps/hibrid.json")
Add geojson
arrondissements = FileAttachment("arrondissements.geojson").json()
{
let container = html`<div style='height:600px;' />`;
yield container;
const map = (container.value = new maplibregl.Map({
boxZoom: true,
pitch: 0,
bearing: 0,
maplibreLogo: true,
container,
center: [2.3374205901589185, 48.8581402090239],
zoom: 11,
style: "https://basemaps.cartocdn.com/gl/voyager-gl-style/style.json",
scrollZoom: true
}));
map.on("load", function () {
map.addSource("mygeojson", {
type: "geojson",
data: arrondissements
});
map.addLayer({
id: "mygeojson",
type: "fill",
source: "mygeojson",
paint: {
"fill-color": "red",
"fill-opacity": 0.5
}
});
});
map.addControl(new maplibregl.NavigationControl());
}
viewof terrain = {
let container = html`<div style='height:600px;' />`;
yield container;
const map = (container.value = new maplibregl.Map({
boxZoom: true,
pitch: 52,
bearing: 50,
maplibreLogo: true,
container,
center: [11.39085, 47.27574],
zoom: 9,
style: terrainstyle,
scrollZoom: true
}));
map.addControl(new maplibregl.NavigationControl());
map.addControl(
new maplibregl.TerrainControl({
source: "terrainSource",
exaggeration: 10
})
);
}
One platform to build and deploy the best data apps
Experiment and prototype by building visualizations in live JavaScript notebooks. Collaborate with your team and decide which concepts to build out.
Use Observable Framework to build data apps locally. Use data loaders to build in any language or library, including Python, SQL, and R.
Seamlessly deploy to Observable. Test before you ship, use automatic deploy-on-commit, and ensure your projects are always up-to-date.