Designer, Developer, Researcher, Lecturer
Public
Edited
Nov 25, 2022
Dieser Befehl macht XY
// url = "https://explore.participatory-archives.ch/api/items?resource_template_id=7"
// url = "https://explore.participatory-archives.ch/api/items/254444"
// call 25 places
url = "https://participatory-archives.ch/api/items?resource_template_id=5"
jsonData = (await fetch(url)).json()
groupedData = d3.group(jsonData, d => d["schema:url"])
hierarchyData = d3.hierarchy(groupedData)
plainGraph = graph(hierarchyData, {label: d => d.data["o:title"]})
dx = 12
dy = 120
tree = d3.tree().nodeSize([dx, dy])
treeLink = d3.linkHorizontal().x(d => d.y).y(d => d.x)
function graph(root, {
label = d => d.data.id,
highlight = () => false,
marginLeft = 40
} = {}) {
root = tree(root);
let x0 = Infinity;
let x1 = -x0;
root.each(d => {
if (d.x > x1) x1 = d.x;
if (d.x < x0) x0 = d.x;
});
const svg = d3.create("svg")
.attr("viewBox", [0, 0, width, x1 - x0 + dx * 2])
.style("overflow", "visible");
const g = svg.append("g")
.attr("font-family", "sans-serif")
.attr("font-size", 10)
.attr("transform", `translate(${marginLeft},${dx - x0})`);
const link = g.append("g")
.attr("fill", "none")
.attr("stroke", "#555")
.attr("stroke-opacity", 0.4)
.attr("stroke-width", 1.5)
.selectAll("path")
.data(root.links())
.join("path")
.attr("stroke", d => highlight(d.source) && highlight(d.target) ? "red" : null)
.attr("stroke-opacity", d => highlight(d.source) && highlight(d.target) ? 1 : null)
.attr("d", treeLink);
const node = g.append("g")
.attr("stroke-linejoin", "round")
.attr("stroke-width", 3)
.selectAll("g")
.data(root.descendants())
.join("g")
.attr("transform", d => `translate(${d.y},${d.x})`);
node.append("circle")
.attr("fill", d => highlight(d) ? "red" : d.children ? "#555" : "#999")
.attr("r", 2.5);
node.append("text")
.attr("fill", d => highlight(d) ? "red" : null)
.attr("stroke", "white")
.attr("paint-order", "stroke")
.attr("dy", "0.31em")
.attr("x", d => d.children ? -6 : 6)
.attr("text-anchor", d => d.children ? "end" : "start")
.text(label);
return svg.node();
}
chart = {
const links = hierarchyData.links();
const nodes = hierarchyData.descendants();
const simulation = d3.forceSimulation(nodes)
.force("link", d3.forceLink(links).id(d => d.id).distance(0).strength(1))
.force("charge", d3.forceManyBody().strength(-50))
.force("x", d3.forceX())
.force("y", d3.forceY());
const svg = d3.create("svg")
.attr("viewBox", [-width / 2, -height / 2, width, height]);
const link = svg.append("g")
.attr("stroke", "#999")
.attr("stroke-opacity", 0.6)
.selectAll("line")
.data(links)
.join("line");
const node = svg.append("g")
.attr("fill", "#fff")
.attr("stroke", "#000")
.attr("stroke-width", 1.5)
.selectAll("circle")
.data(nodes)
.join("circle")
.attr("fill", d => d.children ? null : "#000")
.attr("stroke", d => d.children ? null : "#fff")
.attr("r", 3.5)
.call(drag(simulation));
node.append("title")
.text(d => d.data.name);
simulation.on("tick", () => {
link
.attr("x1", d => d.source.x)
.attr("y1", d => d.source.y)
.attr("x2", d => d.target.x)
.attr("y2", d => d.target.y);
node
.attr("cx", d => d.x)
.attr("cy", d => d.y);
});
invalidation.then(() => simulation.stop());
return svg.node();
}
height = 600
drag = simulation => {
function dragstarted(event, d) {
if (!event.active) simulation.alphaTarget(0.3).restart();
d.fx = d.x;
d.fy = d.y;
}
function dragged(event, d) {
d.fx = event.x;
d.fy = event.y;
}
function dragended(event, d) {
if (!event.active) simulation.alphaTarget(0);
d.fx = null;
d.fy = null;
}
return d3.drag()
.on("start", dragstarted)
.on("drag", dragged)
.on("end", dragended);
}
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.
