Provide the data and meaning beside the chart
See this course’s project requirements
A local SVG bar chart generated from fictional library-use rows, with checked numeric scale, visible labels, matching data table and a text summary.
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What to include
- State the chart question, validated row contract, and limits of the fictional dataset.
- Produce a checked common-scale geometry table with value, height, and top coordinate.
- Create namespaced SVG shapes and labels from one validated source and inspect their rendered agreement.
- Provide and reconcile the chart name, fuller text summary, and structured data table.
- Retain a baseline/change matrix proving every represented value stays synchronized.
- Deliver the chart with independent arithmetic and separate data, rendered, and assistive test statuses.
Review and revise
Use these criteria to check your work and choose what to improve.
- The implementation or declared simulation follows the supplied contract and retains inspectable original inputs.
- Normal, boundary and rejected cases are recorded with expected versus observed results.
- The changed case has a correct explanation and does not rely on hidden state.
- The project includes source, outputs, instructions and honest tool, privacy and verification limits.
Want more background?
The idea in everyday life
Files chart.html, chart-data.mjs and test-chart.mjs use North 8, South 12, West 0 fictional visits. Serve locally with python3 -m http.server 8765 --bind 127.0.0.1; open chart.html.
A chart needs a short identification and a fuller accessible equivalent of its important values and relationships. A visible table and summary also help learners who do not use the graphic.
Provide the data and meaning beside the chart — original worked practice
A chart needs a short identification and a fuller accessible equivalent of its important values and relationships. A visible table and summary also help learners who do not use the graphic.
Files chart.html, chart-data.mjs and test-chart.mjs use North 8, South 12, West 0 fictional visits. Serve locally with python3 -m http.server 8765 --bind 127.0.0.1; open chart.html.
1. Step 1
Inspect the SVG title/desc and aria-labelledby references ct and cd.
You should see: The chart has an associated name and text description.
A chart needs a short identification and a fuller accessible equivalent of its important values and relationships. A visible table and summary also help learners who do not use the graphic.
2. Step 2
Read the visible caption summary: North 8, South 12, West 0, total 20 and scale 0–20.
You should see: The important values and scale are available as text.
A chart needs a short identification and a fuller accessible equivalent of its important values and relationships. A visible table and summary also help learners who do not use the graphic.
3. Step 3
Inspect the matching table caption and row/column headers.
You should see: The numerical data has a structured visible alternative.
A chart needs a short identification and a fuller accessible equivalent of its important values and relationships. A visible table and summary also help learners who do not use the graphic.
4. Step 4
Check that the graphic does not require color alone to identify category or value.
You should see: A chart/data/description equivalence record.
A chart needs a short identification and a fuller accessible equivalent of its important values and relationships. A visible table and summary also help learners who do not use the graphic.
What to finish
Provide and reconcile the chart name, fuller text summary, and structured data table.
Watch for this
Offering a decorative description while omitting values, scale, or the updated data table.
How can I tell I understand it?
Demonstrate the rule: A chart needs a short identification and a fuller accessible equivalent of its important values and relationships. A visible table and summary also help learners who do not use the graphic. Use the supplied variant to distinguish a changed result from a broken implementation.
Quick knowledge check
Answer all 3 questions. Get at least 2 right and the lesson completes automatically.
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Answer all 3 questions above and get at least 2 right. You can review the explanations and try again.
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Source & access notes · checked 2026-10-01
Relevant documented module/API behavior inspected during expansion authoring; actual execution evidence is recorded separately. No grant eligibility is established.
Access: Official page retrieved with the web reader on 2026-10-01. Documentation reading does not certify execution in every native tool or browser.
Reuse: Original local practice files, fictional data, worked examples and questions. Concepts paraphrased and linked; source exercises are not copied.
Source & access notes · checked 2026-10-01
Relevant documented module/API behavior inspected during expansion authoring; actual execution evidence is recorded separately. No grant eligibility is established.
Access: Official page retrieved with the web reader on 2026-10-01. Documentation reading does not certify execution in every native tool or browser.
Reuse: Original local practice files, fictional data, worked examples and questions. Concepts paraphrased and linked; source exercises are not copied.
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