Open Data — Composition Donut
Donut chart showing proportional composition of open-data categories — e.g. agency-share of spend, party-share of legislation. Chart.js scaffold with center label, legend, and responsive layout.
Template details
- chart
- donut
- composition
- open-data
- government
- chartjs
When to use this template
This visualization effectively highlights the proportional composition of a single whole, making it easy to discern the relative contribution of each category. An analyst would reach for it to quickly identify the largest or smallest segments within a total, or to understand how a sum is distributed across its constituent parts. It's ideal for showing how different components add up to 100% or a meaningful aggregate.
- Data representing parts of a single, clearly defined whole.
- A single categorical dimension for segmentation.
- A single quantitative dimension representing magnitude or count.
- Categories that sum to a meaningful total or 100%.
- A limited number of categories (ideally 2-8) for clear readability.
- When relative proportions are more critical than precise absolute values.