Generate line, bar, and area PNG charts from JSON data with Vega-Lite.
npx skills add https://github.com/xukrutdonut/openclaw-skills --skill chart-image
Please help me install this Agent Skill. Skill: chart-image Source: https://github.com/xukrutdonut/openclaw-skills/tree/main/chart-image Command: npx skills add https://github.com/xukrutdonut/openclaw-skills --skill chart-image
chart-image provides a lightweight, server-friendly way to generate publication-quality PNG charts from data without relying on browser-based rendering or external chart services, enabling automated reporting and dashboards.
Use the chart-image skill to generate a simple line chart from sample data: node /data/clawd/skills/chart-image/scripts/chart.mjs --type line --data '[{"x":"Jan","y":10},{"x":"Feb","y":12}]' --output /tmp/chart.png
High-intent search queries and answers about installing and using this skill.
To generate PNG charts from JSON data in a Node.js server environment, you can use a headless rendering script that processes JSON inputs with Vega-Lite and Sharp to produce offline PNG outputs without needing a browser.
Yes, you can create bar, line, and area charts for automated reports without a browser by running a Node.js script headlessly on a server or VPS environment to render visualizations from JSON data feeds.
Yes, this chart generation approach works for headless server and VPS deployments by relying entirely on Node.js with Vega-Lite and Sharp to render publication-quality visualizations offline without any browser dependencies.
The best way to render publication-quality visualizations offline from JSON is using a server-friendly Node.js script that leverages Vega-Lite for chart specification and Sharp to export crisp PNG images directly to your file system.
Yes, you need Vega-Lite and Sharp dependencies in your Node.js environment to parse JSON data and process the resulting PNG image outputs for your monitoring dashboards and automated email reports.
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