Agricultural economics · Thünen Institute of Farm Economics / University Bonn
Nicht die Fläche wählt, sondern die Menschen!Hello, GEOS-WASMUsing GEOS-WASM with GeoJSONUsing the Ramer-Douglas-Peucker algorithm for polygon simplificationDatenauswertung GPS tracker - Teil 3Density of farm animals in different regions in GermanyFilling polygons with patterns in Mapbox GL JSInteractively split a polygon by a lineHello, Well-Known text (WKT)Holiday planner 🌴Building the 'World Life Expectancy 1960–2016' map using the vega-lite-apiRegional crop yields in GermanyQuick WMS Explorer 🧭Render GeoJSON into SVGMapDownload selected NUTS regions 🇪🇺Improving choropleth performanceHello, spatialmergeCalculating the compactness of a PolygonVisualising large geospatial datasources 🗺️
Streaming GeoJSON
{
const context = DOM.context2d(width, height);
yield context.canvas;
const path = d3.geoPath(projection, context);
const stream = await FileAttachment("UScounties.json").stream();
const reader = stream.pipeThrough(geojsonStream.parse()).getReader();
while (true) {
const { done, value: feature } = await reader.read();
if (done) break;
context.beginPath(), path(feature), context.stroke();
}
}
projection = d3
.geoAlbersUsa()
.scale(1272)
.translate([width / 2, height / 2])
width = 954
height = 600
d3 = require("d3-geo@1")
geojsonStream = require("geojson-stream-whatwg@1.0.1/dist/geojson-stream-whatwg.umd.js")
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.
