# wa0x6e/cal-heatmap

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3,144 stars · 304 forks · TypeScript · mit

## Links

- GitHub: https://github.com/wa0x6e/cal-heatmap
- Homepage: http://cal-heatmap.com
- awesome-repositories: https://awesome-repositories.com/repository/wa0x6e-cal-heatmap.md

## Topics

`calendar` `calendar-heatmap` `chart` `d3js` `javascript` `series-data`

## Description

cal-heatmap is a JavaScript visualization library used to render time-series data as a grid of colored cells. It functions as a customizable calendar component that maps data density and frequency over temporal intervals ranging from minutes to years.

The library provides built-in support for localized temporal displays, allowing for the adjustment of regional date formats, timezones, and locale-specific week starts. It utilizes a plugin system for both the calendar layout and heatmap charts to extend behaviors and visual styles.

The system manages data visualization through SVG-based grid rendering and includes capabilities for calendar date navigation and layout configuration. It also supports data-driven color mapping to translate numerical values into visual density patterns.

## Tags

### User Interface & Experience

- [Activity Heatmaps](https://awesome-repositories.com/f/user-interface-experience/calendars/activity-heatmaps.md) — Renders time-series data as a grid of colored cells to highlight activity patterns over time. ([source](http://cal-heatmap.com/docs/getting-started/installation))
- [Calendar Visualization Components](https://awesome-repositories.com/f/user-interface-experience/calendar-visualization-components.md) — Provides a customizable UI component for rendering time-based data records within a grid interface.
- [Locale Displays](https://awesome-repositories.com/f/user-interface-experience/locale-displays.md) — Adjusts date formatting and layouts based on specific locales, timezones, and reading directions. ([source](https://cdn.jsdelivr.net/gh/wa0x6e/cal-heatmap@master/README.md))
- [Localized Temporal Displays](https://awesome-repositories.com/f/user-interface-experience/localized-temporal-displays.md) — Offers built-in support for regional date formats, timezones, and locale-specific week starts.
- [Layout Customization](https://awesome-repositories.com/f/user-interface-experience/calendars/layout-customization.md) — Allows customization of time intervals and navigation animations to fit specific temporal data scales. ([source](https://cdn.jsdelivr.net/gh/wa0x6e/cal-heatmap@master/README.md))
- [Temporal Navigation Interfaces](https://awesome-repositories.com/f/user-interface-experience/temporal-navigation-interfaces.md) — Provides dynamic browsing through different time periods to view historical data. ([source](http://cal-heatmap.com/))

### Data & Databases

- [Time-Series Visualizers](https://awesome-repositories.com/f/data-databases/data-visualization-charts/time-series-visualizers.md) — Represents data density over time using a grid of colored cells to identify patterns and trends. ([source](https://cdn.jsdelivr.net/gh/wa0x6e/cal-heatmap@master/README.md))
- [Numeric and Date Formatting](https://awesome-repositories.com/f/data-databases/date-and-time-libraries/internationalization/numeric-and-date-formatting.md) — Adapts date and time information to different languages, timezones, and regional calendar formats.
- [Regional Conversions](https://awesome-repositories.com/f/data-databases/date-and-time-libraries/regional-conversions.md) — Adjusts language and timezone settings to ensure dates and week starts match regional expectations. ([source](http://cal-heatmap.com/))

### Graphics & Multimedia

- [SVG-Based Vector Rendering](https://awesome-repositories.com/f/graphics-multimedia/graphics-engines-rendering/rendering/engines/canvas-vector-graphics/svg-based-vector-rendering.md) — Generates a scalable vector graphics layout to represent temporal data as a coordinate-based grid.
- [Density-Based Color Gradients](https://awesome-repositories.com/f/graphics-multimedia/scalar-color-mapping/density-based-color-gradients.md) — Implements data-driven color mapping to translate numerical values into visual density patterns.

### Software Engineering & Architecture

- [Locale-Based Date Normalization](https://awesome-repositories.com/f/software-engineering-architecture/timezone-management/timestamp-mapping/timestamp-timezone-settings/locale-based-date-normalization.md) — Processes UTC timestamps into local date representations using locale settings to ensure accurate alignment.
- [Extensible Component Architectures](https://awesome-repositories.com/f/software-engineering-architecture/software-architecture/architectural-patterns/modular-decoupled-design/modular-design-patterns/extensible-component-architectures.md) — Separates calendar logic from chart visualization to allow independent configuration of styles and scales.
- [Hook-Based Plugin Systems](https://awesome-repositories.com/f/software-engineering-architecture/software-architecture/architectural-patterns/plugin-module-systems/modular-plugin-architectures/plugin-based-architectures/hook-based-plugin-systems.md) — Provides a standardized hook and registry system for external modules to modify internal behaviors.

### Development Tools & Productivity

- [Calendar Layout Plugins](https://awesome-repositories.com/f/development-tools-productivity/plugin-systems/calendar-layout-plugins.md) — Provides a plugin system for adding new behaviors and customizing layout options for the calendar. ([source](http://cal-heatmap.com/))
- [Chart Visualization Plugins](https://awesome-repositories.com/f/development-tools-productivity/plugin-systems/chart-visualization-plugins.md) — Implements a plugin system for heatmaps to integrate custom behaviors and visual enhancements. ([source](https://cdn.jsdelivr.net/gh/wa0x6e/cal-heatmap@master/README.md))

### System Administration & Monitoring

- [General Activity Dashboards](https://awesome-repositories.com/f/system-administration-monitoring/system-activity-monitoring/session-activity-monitors/general-activity-dashboards.md) — Enables the creation of visual interfaces that track user engagement or system events over long periods.