[funnel-basic] Basic Funnel Chart

[MarkusNeusinger]

A funnel chart showing sequential stages of a process with decreasing values.

Use Case: Visualize conversion rates, sales pipelines, or multi-step processes where each stage shows a proportion of the previous stage.

Data: Sequential stages with names and values (e.g., Awareness → Interest → Decision → Purchase)

Features:

• Trapezoidal segments that narrow from top to bottom
• Clear stage labels and values
• Color differentiation between stages
• Percentage or value annotations

[claude]

✅ Spec ID: funnel-basic

Rationale: This is a new plot type (funnel chart) that doesn't exist in the repository. The funnel-basic ID follows the naming convention for a standard funnel chart showing sequential stages with decreasing values.

Add label approved to begin generation.

[github-actions]

✅ Specification Ready: funnel-basic

PR: #790

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specification.md

funnel-basic: Basic Funnel Chart

Description

A funnel chart visualizes sequential stages of a process where values progressively decrease from one stage to the next. Each stage is represented as a trapezoidal segment that narrows from top to bottom, making it easy to identify drop-offs between stages. This chart is ideal for tracking conversion rates, sales pipelines, and multi-step processes where understanding stage-to-stage transitions is critical.

Applications

• Marketing teams tracking website visitor conversion from awareness through purchase
• Sales organizations visualizing pipeline stages from leads to closed deals
• HR departments analyzing recruitment funnel from applications to hires
• E-commerce platforms monitoring checkout abandonment at each step

Data

• stage (string) - Name of each sequential stage in the process
• value (numeric) - Count or amount at each stage, typically decreasing
• Size: 3-8 stages (too many stages reduce readability)
• Example: Sales funnel with stages ["Awareness", "Interest", "Consideration", "Intent", "Purchase"] and values [1000, 600, 400, 200, 100]

Notes

• Stages should be ordered from largest (top) to smallest (bottom)
• Use distinct colors for each stage to improve visual differentiation
• Include value or percentage labels on each segment for clarity
• The width of each segment should be proportional to its value relative to the first stage

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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: funnel-basic
PR: #790 (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