Data Scientist, Author, DataVis, Educator, Speaker, Public Service @ClintonBrownley
https://cbrownley.github.io
Public
Edited
May 23, 2024
1 star
/*data = Array.from({ length: 50 }).map((d, i) => ({
age: Math.random() * 150,
height: Math.random() * 2.0,
name: `Person ${i}`,
profession: ["Teacher", "Lawyer", "Coffee Grower"][
Math.floor(Math.random() * 3)
]
}))*/
data = students.map((d, i) => ({
firstName: d.first_name,
lastName: d.last_name,
firstNameLength: d.first_name.length + Math.random() ,
lastNameLength: d.last_name.length + Math.random(),
nameLength: d.first_name.length + d.last_name.length + Math.random(),
profession: ["A", "B", "C"][Math.floor(Math.random() * 3)]
}))
{
const target = html`<svg id="target" viewBox="0 0 ${width} ${height}">
<circle cx="200" cy="200" r="30"></circle>
</svg>`;
const svg = d3.select(target);
for (let d of data) {
svg
.append("circle")
.attr("cx", d.firstNameLength * 50)
.attr("cy", d.lastNameLength * 50)
.attr("r", 5)
.attr("fill", "steelblue");
svg
.append("text")
.attr("x", d.firstNameLength * 50 + 7)
.attr("y", d.lastNameLength * 50 + 3)
.style("font-size", "8pt")
.text(d.firstName);
}
return target;
}
{
const target = html`<svg id="target" viewBox="0 0 ${width} ${height}"></svg>`;
const svg = d3.select(target);
const circles = svg
.selectAll("circle")
.data(data)
.join("circle")
.attr("cx", (d) => d.firstNameLength * 300)
.attr("cy", (d) => d.lastNameLength * 50)
.attr("r", 5)
.attr("fill", "steelblue");
return target;
}
{
const target = html`<svg id="target" viewBox="0 0 ${width} ${height}"></svg>`;
const svg = d3.select(target);
const x = d3
.scaleLinear()
.domain([0, d3.max(data, (d) => d.firstNameLength)])
.range([0, width - margin.right - margin.left]);
const y = d3
.scaleLinear()
.domain([0, d3.max(data, (d) => d.lastNameLength)])
.range([0, height - margin.bottom - margin.top]);
const circles = svg
.selectAll("circle")
.data(data)
.join("circle")
.attr("cx", (d) => x(d.firstNameLength))
.attr("cy", (d) => y(d.lastNameLength))
.attr("r", 5)
.attr("fill", "steelblue");
return target;
}
{
const target = html`<svg id="target" viewBox="0 0 ${width} ${height}"></svg>`;
const margin = { left: 50, right: 20, top: 20, bottom: 50 },
iwidth = width - margin.left - margin.right,
iheight = height - margin.top - margin.bottom;
const svg = d3.select(target);
const gDrawing = svg
.append("g")
.attr("transform", `translate(${margin.left}, ${margin.top})`);
gDrawing
.append("rect")
.attr("width", iwidth)
.attr("height", iheight)
.attr("fill", "#eee");
const x = d3
.scaleLinear()
.domain([0, d3.max(data, (d) => d.firstNameLength)])
.range([0, iwidth])
.nice();
const y = d3
.scaleLinear()
.domain([0, d3.max(data, (d) => d.lastNameLength)])
.range([iheight, 0])
.nice();
const circles = gDrawing
.selectAll("circle")
.data(data)
.join("circle")
.attr("cx", (d) => x(d.firstNameLength))
.attr("cy", (d) => y(d.lastNameLength))
.attr("r", 5)
.attr("fill", "steelblue");
gDrawing
.append("g")
.attr("class", "x--axis")
.attr("transform", `translate(0, ${iheight / 2})`)
.call(d3.axisBottom(x));
gDrawing
.append("g")
.attr("class", "y--axis")
.attr("transform", `translate(${iwidth / 2}, 0)`)
.call(d3.axisLeft(y));
return target;
}
{
const target = html`<svg id="target" viewBox="0 0 ${width} ${height}"></svg>`;
const margin = { left: 50, right: 20, top: 20, bottom: 50 },
iwidth = width - margin.left - margin.right,
iheight = height - margin.top - margin.bottom;
const svg = d3.select(target);
const gDrawing = svg
.append("g")
.attr("transform", `translate(${margin.left}, ${margin.top})`);
gDrawing
.append("rect")
.attr("width", iwidth)
.attr("height", iheight)
.attr("fill", "#eee");
const x = d3
.scaleLinear()
.domain([0, d3.max(data, (d) => d.firstNameLength)])
.range([0, iwidth])
.nice();
const y = d3
.scaleLinear()
.domain([0, d3.max(data, (d) => d.lastNameLength)])
.range([iheight, 0])
.nice();
const color = d3.scaleOrdinal(d3.schemePastel2);
// .domain(Array.from(new Set(data.map(d => d.profession)).values()));
gDrawing
.selectAll("text")
.data(data)
.join("text")
.attr("x", (d) => x(d.firstNameLength))
.attr("y", (d) => y(d.lastNameLength) + 15)
.attr("text-anchor", "middle")
.attr("font-family", "sans-serif")
.attr("font-size", "11px")
.attr("fill", "black")
.text((d) => d.firstName);
const circles = gDrawing
.selectAll("circle")
.data(data)
.join("circle")
.attr("cx", (d) => x(d.firstNameLength))
.attr("cy", (d) => y(d.lastNameLength))
.attr("r", 5)
.attr("fill", (d) => color(d.profession));
gDrawing
.append("g")
.attr("class", "x--axis")
.attr("transform", `translate(0, ${iheight})`)
.call(d3.axisBottom(x));
gDrawing.append("g").attr("class", "y--axis").call(d3.axisLeft(y));
return target;
}
height = width * .5
margin = ({ top: 10, right: 10, bottom: 10, left: 10 })
d3 = require("d3@6")
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.
