I'm a professor of mathematics at the University of North Carolina Asheville. I've also done a fair amount of consulting work over the years focusing on scientific and data visualization.
I'm happy to be part of the first Observable Ambassador's cohort.
Unlisted
Edited
May 16, 2023
teams = [
"Ohio_State",
"Michigan_State",
"Maryland",
"Rutgers",
"Michigan",
"Penn_State",
"Indiana"
]
M = [
[0, 1, 1, 1, 1, 1, 1],
[0, 0, 1, 1, 1, 1, 1],
[0, 0, 0, 0, 1, 1, 1],
[0, 0, 1, 0, 1, 0, 1],
[0, 0, 0, 0, 0, 1, 1],
[0, 0, 0, 1, 0, 0, 1],
[0, 0, 0, 0, 0, 0, 0]
]
strengths = {
let A = math.matrix(M);
let step = math.ones(M.length);
for (let i = 0; i < 100; i++) {
step = math.multiply(M, step);
step = math.divide(step, math.norm(step));
}
return step.toArray();
}
table_code = {
let table_code = "|Rank|Team|Rating|\n|---|---|---|\n";
d3.sort(d3.zip(teams, strengths), (a) => a[1])
.reverse()
.forEach(
(a, i) =>
(table_code =
table_code + `|${i + 1}|${a[0]}|${d3.format("0.3f")(a[1])}|\n`)
);
// .forEach(function (a, i) {});
return table_code;
}
dot_source = {
let edges = [];
for (let i = 0; i < M.length; i++) {
for (let j = 0; j < M.length; j++) {
if (M[i][j] > 0) {
edges.push(`${teams[i]} -> ${teams[j]} [label=${M[i][j]}]`);
}
}
}
return `digraph{
${edges.join("\n ")}
}`;
}
math = require("mathjs")
{
let div = d3.create("div");
d3.graphviz(div.node()).renderDot(dot_source);
return div.node();
}
d3 = require("d3@7", "d3-graphviz@2")
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.
