Pygal is a charting library that produces graphical visualisations using Scalable Vector Graphics (SVG). It is designed for creating charts that can be displayed in web browsers while retaining the resolution-independent properties of vector graphics.
SVG output is particularly useful for websites, reports and dashboards because charts can be resized without losing sharpness. The resulting graphics can also incorporate styling and interactive elements that make them more useful for presenting data.
Pygal supports a variety of common statistical and analytical chart types. It provides controls for adjusting their appearance, arranging data series and presenting values in a readable graphical format.
The library is useful when developers want to generate charts programmatically and embed the resulting output in HTML documents without relying on a separate interactive plotting service.
This is free and open source software.
Key Features
- Generate scalable vector charts using SVG.
- Create line, stacked line, bar and horizontal bar charts.
- Support pie, donut, radar, histogram and scatter charts.
- Generate box plots, dot plots, funnel charts and gauge visualisations.
- Provide treemap and other specialised chart types.
- Display multiple data series within individual charts.
- Customise series colours, line styles, markers and other visual properties.
- Interactive chart elements with browser-based tooltips.
- Configurable legends, labels and axis formatting.
- Built-in visual styles for changing chart appearance.
- Custom styling using CSS and reusable style definitions.
- Support for logarithmic and other configurable chart scales.
- Adjust chart dimensions, margins and graphical layout.
- Export SVG output for embedding in web pages and documents.
- Render charts as PNG images when suitable rendering support is available.
- Support interactive legends and chart presentation features.
- Generate standalone SVG files without requiring a hosted graphical service.
Website: github.com/Kozea/pygal
Support:
Developer: Kozea Group and contributors
License: GNU Lesser General Public License v3.0
pygal is written in Python. Learn Python with our recommended free books and free tutorials.
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