Public
Edited
Nov 1, 2023
data = [
{ group: 1, number: "1" },
{ group: 1, number: "1" },
{ group: 2, number: "1" }
]
d3.rollup(
data,
(r) => r[0],
(d) => d.group
)
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.
