import {select} from '@jashkenas/inputs'
viewof selection = {
const files = new Map([
FileAttachment("map@1.json"),
FileAttachment("map@2.json")
].map(f => [f.name, f]));
const form = select({
description: "Select Dataset",
options: Array.from(files.keys()),
value: "map@2.json"
});
return Object.defineProperty(html`<div>${form}`, 'value', {get() { return files.get(form.value) }});
}
Type JavaScript, then Shift-Enter. Ctrl-space for more options. Arrow ↑/↓ to switch modes.
data = selection.json()
chart = {
const links = data.links.map(d => Object.create(d));
const nodes = data.nodes.map(d => Object.create(d));
const simulation = d3.forceSimulation(nodes)
.force("link", d3.forceLink(links).id(d => d.id))
.force("charge", d3.forceManyBody())
.force("center", d3.forceCenter(width / 2, height / 2));
let div = html`<div><h3>Network with search</h3>`;
div.append(searchf);
const svg = d3.create("svg")
.attr("viewBox", [0, 0, width, height]);
const g = svg.append("g")
const link = g.append("g")
.attr("stroke", "#999")
.attr("stroke-opacity", 0.6)
.selectAll("line")
.data(links)
.join("line")
.attr("stroke-width",d => (d.value/10));
const globalNode = g.append("g")
.attr("stroke", "#fff")
.attr("stroke-width", 0.75);
const node = globalNode
//const node = g.append("g")
.selectAll("circle")
.data(nodes)
.join("circle")
.attr("r", d=>d.size)
.attr("fill", color)
//.call(drag(simulation));
let zoomLvl = 1;
let lastK = 0;
node.append("title")
.text(d => d.label);
const textElements = g.append('g')
.selectAll('text')
.data(nodes)
.enter().append('text')
.text(node => node.label)
.attr('font-size', 8)
.attr("font-family", "Nunito")
.attr("fill", "#555")
.attr('dx', 10)
.attr('dy', 4)
var searchNode = function(){
debugger;
if (selectedNode === "none") {
node.style("stroke", "white").style("stroke-width", "1");
} else {
let selected = nodes.filter( d => d.id != selectedNode );
selected.style("opacity", "0");
link.style("opacity", "0");
d3.selectAll(".node, .link").transition()
.duration(5000)
.style("opacity", 1);
}
};
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);
textElements
.attr("x", d => d.x)
.attr("y", d => d.y);
node
.attr("cx", d => d.x)
.attr("cy", d => d.y);
});
invalidation.then(() => simulation.stop());
svg.call(d3.zoom()
.extent([[0, 0], [width, height]])
.scaleExtent([-10, 80])
.on("zoom", zoomed));
function zoomed() {
let e = d3.event
if(e.transform.k > 2 && lastK != e.transform.k){
lastK = e.transform.k;
console.log("zoomed");
zoomLvl = Math.log2(e.transform.k);
g.append("g").attr("stroke-width", 1.5/zoomLvl );
link.attr("stroke-width", d => Math.sqrt(d.value)/(zoomLvl));
textElements.attr('font-size', 10/zoomLvl);
textElements.attr('dx',10/zoomLvl);
textElements.attr('dy',5/zoomLvl);
}
g.attr("transform", e.transform);
}
return svg.node();
div.appendChild(svg.node());
return div;
}
function autoSelect(config = {}) {
let {
value,
title,
description,
autocomplete = "off",
placeholder,
size,
options,
list = "options"
} = config;
if (Array.isArray(config)) options = config;
const optionsSet = new Set(options);
const form = input({
type: "text",
title,
description,
action: fm => {
fm.value = fm.input.value = value || "";
fm.onsubmit = e => e.preventDefault();
fm.input.oninput = function(e) {
e.stopPropagation();
fm.value = fm.input.value;
if (optionsSet.has(fm.input.value))
fm.dispatchEvent(new CustomEvent("input"));
};
},
form: html`
<form>
<input class="search-box" name="input" type="text" autocomplete="off"
placeholder="${placeholder}" style="font-size: 1em;" list=${list}>
<datalist id="${list}">
${options.map(d =>
Object.assign(html`<option>`, {
value: d
})
)}
</datalist>
</form>
`
});
form.output.remove();
return form;
}
searchf = html`<div>${viewof selectedNode}<button type="button" onclick="searchNode()">Search</button>`
viewof selectedNode = autoSelect({
options: data.nodes.map(d => d.id),
placeholder: "Search a name . . ."
})
import {input} from "@jashkenas/inputs"
//data = (await fetch("http://128.42.130.34/flask/graph")).json
height = 850
width = 1100
color = {
const scale = d3.scaleOrdinal(d3.schemeCategory10);
return d => scale(d.group);
}
drag = simulation => {
function dragstarted(d) {
if (!d3.event.active) simulation.alphaTarget(0.3).restart();
d.fx = d.x;
d.fy = d.y;
}
function dragged(d) {
d.fx = d3.event.x;
d.fy = d3.event.y;
}
function dragended(d) {
if (!d3.event.active) simulation.alphaTarget(0);
d.fx = null;
d.fy = null;
}
return d3.drag()
.on("start", dragstarted)
.on("drag", dragged)
.on("end", dragended);
}
d3 = require("d3@5")
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.