Student at WPI
function linkArc(d) {
const r = Math.hypot(d.target.x - d.source.x, d.target.y - d.source.y);
const startx = d.source.x + ((d.target.x - d.source.x) * (bubbleSize/r))
const starty = d.source.y + ((d.target.y - d.source.y) * (bubbleSize/r))
const endx = d.target.x + ((d.source.x - d.target.x) * (bubbleSize/r))
const endy = d.target.y + ((d.source.y - d.target.y) * (bubbleSize/r))
return `
M${startx},${starty}
A${r},${r} 0 0,1 ${endx},${endy}
`;
}
words = function(text) {
const words = text.split(/\s+/g); // To hyphenate: /\s+|(?<=-)/
if (!words[words.length - 1]) words.pop();
if (!words[0]) words.shift();
return words;
}
measureWidth = {
const context = document.createElement("canvas").getContext("2d");
return text => context.measureText(text).width;
}
lineHeight = 18
targetWidth = text => Math.sqrt(measureWidth(text.trim()) * lineHeight)
lines = function(words) {
let line;
let lineWidth0 = Infinity;
const lines = [];
for (let i = 0, n = words.length; i < n; ++i) {
let lineText1 = (line ? line.text + " " : "") + words[i];
let lineWidth1 = measureWidth(lineText1);
if ((lineWidth0 + lineWidth1) / 2 < targetWidth(words.join(" ")) ) {
line.width = lineWidth0 = lineWidth1;
line.text = lineText1;
} else {
lineWidth0 = measureWidth(words[i]);
line = {width: lineWidth0, text: words[i]};
lines.push(line);
}
}
return lines;
}
textRadius = function(lines) {
let radius = 0;
for (let i = 0, n = lines.length; i < n; ++i) {
const dy = (Math.abs(i - n / 2 + 0.5) + 0.5) * lineHeight;
const dx = lines[i].width / 2;
radius = Math.max(radius, Math.sqrt(dx ** 2 + dy ** 2));
}
return radius;
}
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.