Create a Donut Chart online with InstaNANO
The InstaNANO Graph Plotter can create a donut chart directly in your browser. The interactive graph above is already initialized with example data. Replace those values with your own table, assign the supported column roles, adjust the graph settings, and inspect the result on the same page.
A donut chart shows the relative parts of one positive-valued composition as a ring of slices. Use it for a small, clearly defined composition when the ring layout supports the intended visual presentation.
Required data columns and series controls
| Column role | Supported layout | How InstaNANO uses it |
|---|---|---|
| X-axis | One category label column | Provides the slice name; text labels are accepted. |
| Y-axis | One positive numeric value column | Provides the size of each slice. |
The graph forms slices from the category labels and positive Y values. Do not use the single Y-axis Color row as an additional quantitative variable; slice colors are assigned at the datum level by the pie renderer.
How to make this graph
- Start with the working example. Review the graph and table loaded above so the relationship between the columns and plotted marks is visible before you replace the values.
- Enter or paste your data. Keep the columns in the supported order shown in the table below the graph. Use the Axis row to assign each column’s role.
- Name and distinguish the series. Where the current graph supports them, use the Name row for the displayed series label and the Color row for its color.
- Check the scientific context. Add meaningful axis titles and units, review scale choices, and confirm that row order, missing values, uncertainty columns, or normalization match the intended interpretation.
- Refine and export. Use the available graph controls described below. When the figure is ready, sign in to export a PNG with Download Graph or preserve an editable
.instananofile with Save Project.
What the loaded example demonstrates
The starter table lists named fractions such as anatase and rutile with positive values. It demonstrates how labels and values become slices; it is not a quantitative phase-analysis result.
What InstaNANO calculates and renders
The renderer uses the same category and positive-value input as the pie chart, calculates slice shares from their total, and reserves the center as an empty hole.
The current donut renderer uses the first X–Y pair and supports a slice-gap control; only positive finite values become slices.
Scientific instruments and research data suited to this graph
Use it for a concise composition overview when category labels, values, and relative share can be read from the accompanying legend or tooltip.
Broad instrument and data coverage
- Phase and material composition: Externally quantified crystalline phases, mineral fractions, alloy constituents, ceramic components, polymer blends, or composite contents forming one defined whole.
- Elemental and chemical fractions: EDS, XPS, XRF, ICP, chromatography, spectroscopy, or chemical-analysis results after valid quantification and normalization outside the graph.
- Spectral and fitted components: Peak-area, band, relaxation, or signal-component shares when the components are mutually interpretable and their total is scientifically defined.
- Formulation and process allocation: Ingredient fractions, product distributions, mass balance, energy allocation, resource use, or category shares for one sample or system.
- Classification and population summaries: A small number of mutually exclusive morphology classes, defect types, biological categories, or outcome groups reported as positive values.
Representative questions for this exact graph
- One compact composition or allocation shown as positive ring segments.
- A small phase- or component-fraction summary with labels and tooltips.
- A presentation-focused part-to-whole view where the center is intentionally left open.
This coverage is not limited to the instruments named above. InstaNANO can plot other experimental, microscopy-derived, computational, simulation, and processed research data when the required column roles are present and this graph’s encoding is scientifically appropriate.
Data checks before interpretation
- Use clear category labels and positive finite values for the intended parts.
- Verify the definition of the whole and compositional basis outside the graph.
Frequently asked questions about Donut Chart
Does the donut hole encode an additional variable?
The central hole does not add a variable, and slice-angle comparison remains imprecise for many or similar categories. The graph does not validate compositional closure or category independence.
Can I plot data from instruments or research workflows not listed here?
Yes. The instrument and dataset examples on this page are representative rather than a fixed compatibility list. InstaNANO can create a donut chart from other experimental, computational, simulation, and processed research data when the table follows these roles: X-axis (one category label column), Y-axis (one positive numeric value column). Microscopy use refers to numeric profiles, coordinates, dimensions, counts, intensities, distributions, or map values extracted from images; the graph does not convert a raw micrograph into numerical data.
Can I use this donut chart in a publication, thesis, report, poster, or presentation?
Yes, after scientific and visual review. InstaNANO can be used to prepare a donut chart for a journal manuscript, thesis or dissertation, technical report, poster, conference slide, classroom presentation, or other formal scientific communication. After sign-in, Download Graph exports a PNG, defaults to 600 dpi, and offers a transparent-background option. For this graph, define the whole, compositional basis, included categories, and any normalization or excluded fraction. Also check final dimensions, font size, line and symbol weight, color accessibility, caption content, and the destination’s required file format. The current export is PNG, so a journal that requires TIFF, EPS, PDF, SVG, or another format needs a journal-specific workflow. InstaNANO supports figure preparation, but it cannot guarantee that a journal, conference, institution, or publisher will accept a figure.
Choose a related graph when needed
Choose Pie Chart for a solid-slice view, 100% Stacked Bar Chart to compare multiple compositions, or Bar Chart when exact category comparison is more important.
Plot your data or compare graph types
Edit the loaded Donut Chart example above to test your own values. If this encoding does not match the scientific question, compare the complete graph-type directory or return to the online graph plotter.