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 🖥️
Public
Edited
Mar 22, 2024
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Importers
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eugrid = FileAttachment("ESTAT_OBS-VALUE-T_2021_V1-0.tiff")
GeoTIFF = require("geotiff@2.0.7")
eu = tiff2json(eugrid)
proj4 = require("proj4")
proj4.defs([
[
"EPSG:4326",
"+title=WGS 84 (long/lat) +proj=longlat +ellps=WGS84 +datum=WGS84 +units=degrees"
],
[
"EPSG:3035",
"+proj=laea +lat_0=52 +lon_0=10 +x_0=4321000 +y_0=3210000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs"
]
])
data = eu
.filter((d) => d.value != 0)
.map((d) => {
let coord = proj4("EPSG:3035", "EPSG:4326", [d.x, d.y]);
return { lat: coord[1], lon: coord[0], value: d.value };
})
//deck = require("https://unpkg.com/deck.gl@latest/dist.min.js")
lib = require
.alias({
h3: {},
S2: {}
})("deck.gl@~8.7.11/dist.min.js")
.then(() => ({
deck: window.deck,
luma: window.luma
}))
deck = lib.deck
viewof map = {
let container = html`<div style='height:600px;' />`;
yield container;
let map = new maplibregl.Map({
container,
center: { lng: -1.2316579976425146, lat: 41.10902383137352 },
zoom: 5.25,
pitch: 60,
style: "https://basemaps.cartocdn.com/gl/voyager-gl-style/style.json",
attributionControl: false
});
map.addControl(new maplibregl.NavigationControl());
map.addControl(
new maplibregl.AttributionControl({
compact: true,
customAttribution: "UAR RIATE, 2023"
})
);
map.on("load", async () => {
container.value = map;
container.dispatchEvent(new CustomEvent("input"));
});
}
deckLayer = {
if (map.getLayer("hexagon")) {
map.removeLayer("hexagon");
}
const _deckLayer = new deck.MapboxLayer({
id: "hexagon",
type: deck.HexagonLayer,
colorRange: [
[26, 152, 80],
[145, 207, 96],
[217, 239, 139],
[254, 224, 139],
[252, 141, 89],
[215, 48, 39]
],
colorScaleType: "quantile",
data: data,
extruded,
elevationScale,
elevationScaleType: "linear",
elevation_range: 2,
getPosition: (d) => [Number(d.lon), Number(d.lat)],
getColorWeight: (d) => d.value,
getElevationWeight: (d) => d.value,
colorAggregation: "SUM",
opacity: 1,
radius: hexSize
});
map.addLayer(_deckLayer, "watername_lake_line");
return _deckLayer;
}
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