An R package for high-performance WebGL rendering of large datasets on Leaflet maps.
leafgl is an R package that provides high-performance WebGL rendering for Leaflet maps, allowing users to visualize massive spatial datasets—like millions of points or hundreds of thousands of polygons—interactively in a web browser. It solves the problem of browser slowdowns or crashes when rendering large geographic data by leveraging GPU acceleration. The package is a port of the Leaflet.glify JavaScript library, optimized for the R ecosystem.
R developers and data scientists working with large geospatial datasets who need to create interactive web maps without performance limitations. It is particularly useful for researchers, analysts, and developers in fields like environmental science, urban planning, or logistics who handle big spatial data.
Developers choose leafgl because it enables the visualization of datasets at scales that are impractical with standard Leaflet rendering, all within familiar R workflows. Its unique selling point is the combination of R's spatial data handling with browser-based GPU acceleration, offering unmatched performance for large-scale interactive mapping.
R package for fast web gl rendering for leaflet
Open-Awesome is built by the community, for the community. Submit a project, suggest an awesome list, or help improve the catalog on GitHub.
Leverages WebGL to handle millions of points or hundreds of thousands of polygons efficiently, enabling interactive visualization of massive spatial datasets without browser slowdowns, as demonstrated in the README's examples with 1 million points.
Works directly with the popular leaflet package, allowing users to add WebGL layers to standard Leaflet maps with minimal code changes, maintaining familiarity for R developers.
Supports coloring features based on attribute columns using libraries like colourvalues, facilitating data-driven visualizations without requiring custom JavaScript, as shown in the example with viridis color scales.
Includes dedicated leafglOutput and renderLeaflet functions for easy integration into Shiny applications, enabling high-performance maps in interactive dashboards, with a provided example in the README.
Sacrifices features like custom popup content and extensive styling options to prioritize performance, as the README admits that only basic coloring and popups based on one column are supported.
Currently under heavy development with frequent changes and potential breaking updates, making it risky for production use, as stated in the 'What doesn’t it do?' section warning about lack of guarantees.
Known issues where colors may appear incorrectly on some operating systems and browsers, requiring workarounds like setting opacity = 1, as noted in the README's warning section.
Performance and compatibility vary based on the user's hardware and browser, limiting reliability in heterogeneous environments, as mentioned in the README regarding RAM and subtle problems.