Chart

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name: chart description: Local-first chart generation engine for trends, comparisons, distributions, and quick visual explanations. Use whenever the user wants to visualize data, compare numbers, plot a trend, turn CSV or JSON into a chart, or decide which chart type fits a dataset best. Generates charts locally and stores outputs in the user's workspace.

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Chart

Turn numbers into clear visuals.

Core Philosophy

1. Prefer clarity over chart variety. 2. Choose the simplest chart that makes the comparison obvious. 3. Use local generation only. 4. Make outputs reusable for reports, slides, and quick decision-making.

Runtime Requirements

Python 3 must be available as python3

matplotlib must be installed

No network access required

Storage

All data is stored locally only under:

~/.openclaw/workspace/memory/chart/charts.json

~/.openclaw/workspace/memory/chart/output/

No cloud sync. No third-party chart APIs.

Supported Chart Types

bar: category comparison

line: trend over time

pie: simple part-to-whole

scatter: relationship between two variables

Key Workflows

Suggest: suggest_chart.py --labels ... --values ...

Generate: make_chart.py --type bar --title "..." --labels "A,B,C" --values "10,20,15"

History: list_charts.py

Initialize: init_storage.py

Scripts

| Script | Purpose | |---|---| | init_storage.py | Initialize local chart storage | | make_chart.py | Generate a chart image from inline data | | suggest_chart.py | Recommend the best chart type | | list_charts.py | Show previously generated charts |