[bar-stacked-labeled] Stacked Bar Chart with Total Labels

[MarkusNeusinger]

A stacked bar chart with sum labels displayed on top of each bar stack. Shows both individual segment values and total values for easy comparison.

[claude]

✅ Spec ID: bar-stacked-labeled

Rationale: This is a valid variant of stacked bar chart that specifically requires total value labels on top of each bar stack. While the existing bar-stacked mentions labels as optional, this spec makes them a required feature.

Add label approved to begin generation.

[github-actions]

✅ Specification Ready: bar-stacked-labeled

PR: #3507

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specification.md

bar-stacked-labeled: Stacked Bar Chart with Total Labels

Description

A stacked bar chart that displays multiple data series stacked on top of each other with total value labels prominently shown above each bar stack. This variant combines part-to-whole visualization with explicit numerical annotations, making it easy to read both individual segment contributions and cumulative totals at a glance. The total labels eliminate the need for mental arithmetic when comparing overall values across categories.

Applications

• Comparing quarterly sales by product line with clear total revenue figures for executive presentations
• Displaying project budget breakdowns by task category with visible total costs for each project phase
• Visualizing survey response distributions with total respondent counts labeled for each question

Data

• category (categorical) - Labels for each bar group on the x-axis (e.g., quarters, departments, regions)
• component (categorical) - The different series being stacked within each bar (e.g., product lines, cost types)
• value (numeric) - Size of each segment representing the measured quantity
• Size: 3-8 categories with 2-5 stacked components recommended for readability
• Example: Quarterly revenue by product category, department expenses by cost type

Notes

• Total labels should be placed directly above each complete bar stack with clear formatting
• Use a consistent number format for labels (e.g., rounded integers, one decimal place, or with units)
• Ensure adequate vertical space above the tallest bar for label placement
• Consider using a slightly larger or bold font for total labels to distinguish from segment labels
• Segment labels within the bars are optional but can enhance readability for larger segments

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Next: Add approved label to merge this specification to main.

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🤖 spec-create workflow

[github-actions]

🚀 Specification Merged!

Specification: bar-stacked-labeled
PR: #3507 (merged)

The specification is now in main and synced to PostgreSQL.

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Next: Add generate:{library} labels to start generating implementations.

Available libraries: matplotlib, seaborn, plotly, bokeh, altair, plotnine, pygal, highcharts, letsplot

Or use workflow dispatch for bulk operations.

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🤖 spec-create workflow