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chart-data-extractor

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Extract pixel-level data from an image of a chart or graph and produce a structured data table. Use when asked to extract data from a chart image, transcribe numbers from a graph, digitise a chart, or turn a screenshot of data into a table. Produces a structured table with extracted values, confidence levels, and a reconstructed chart source. Needs a model that can read images at high resolution.

plugins/pm-vision/skills/chart-data-extractor/SKILL.md

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Nov 11, 2026
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# Chart Data Extractor Skill

Extracts data from images of charts and graphs — bar charts, line charts, pie charts, scatter plots, and tables in images — producing a structured data table that can be used in spreadsheets or rebuilt in any charting tool.

## Required Inputs

Work from what is given. If any of these is missing, still produce the complete output: fill each gap with a reasonable assumption marked *(assumed, confirm)* and list those assumptions at the end. Ask a question first only when the core subject itself is missing (there is nothing to write about).
- **The chart image** (upload a screenshot or image file)
- **Chart type** (if ambiguous — bar / line / pie / scatter / other)
- **What matters most** (approximate trends / precise values / specific data points / categorisation)
- **Known axis values** (optional — if the user knows the max/min values to anchor the extraction)

## Output Structure
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