The avatar for @parkerziegler
Parker Ziegler
Ph.D. Student at UC Berkeley EECS. Prev. @FormidableLabs.
Public
The National Debt
Edited
Aug 23, 2021
The National Debt
The National Debt
The National Debt Across Presidential ErasThe National Debt Across Congressional Eras
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data = {
const resolve = (url, acc = []) => {
const data = d3.json(url).then(response => {
const result = acc.concat(
response.data.map(d => ({
date: d3.utcParse("%Y-%m-%d")(d.record_date),
value: +d.tot_pub_debt_out_amt
}))
);

if (response.links.next) {
return resolve(`${endpoint}?${response.links.next}`, result);
}

return result;
});

return data;
};

return resolve(`${endpoint}?page[number]=1&page[size]=1000`);
}
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class Tooltip {
constructor({ x, y }) {
this._x = x;
this._y = y;
this._date = svg`<text y="-30"></text>`;
this._debt = svg`<text y="-12"></text>`;
this._line = svg`<line x1="0" y1="0" x2="0" y2="${height -
margin.bottom -
margin.top}" stroke=${colors.axis} stroke-dasharray="2" />`;
this.node = svg`
<g pointer-events="none" display="none" font-family="'Helvetica Neue', sans-serif" font-size="12" text-anchor="middle">
${this._line}
<rect x="-35" width="70" y="-45" height="40" fill="#FFFFFF"></rect>
${this._date}
${this._debt}
<circle r="2.5"></circle>
</g>
`;
}

show(d) {
this.node.removeAttribute("display");
this.node.setAttribute(
"transform",
`translate(${this._x(d.date)},${this._y(d.value)})`
);
this._date.textContent = formatDate(d.date);
this._debt.textContent = formatDebt(d.value);
this._line.setAttribute(
"transform",
`translate(0, ${this._y(d.value) * -1 + margin.top})`
);
}

hide() {
this.node.setAttribute("display", "none");
}
}
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bisect = {
const bisectDate = d3.bisector(d => d.date).left;

return (data, date) => {
const i = bisectDate(data, date, 1);
const a = data[i - 1];
const b = data[i];

return date - a.date > b.date - date ? b : a;
};
}
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formatDate = d3.utcFormat("%b %-d, ’%y")
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formatDebt = d3.format("s")
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height = 600
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margin = ({ top: 40, left: 40, right: 40, bottom: 40 })
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colors = ({
axis: '#D1D5DB',
line: 'steelblue',
metric: '#9CA3AF'
})
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d3 = require('d3@6')
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