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rOpenSci’s second cohort of Champions has been onboarded! Their training first started with a session on code style, was followed by three sessions on the basics of R package development, and ended with a session on advanced R package development, which consisted of a potpourri of tips with discussion, followed by time for applying these principles to the participants’ packages. Here, I want to share one of the topics covered: Package testing, and in particular, the DRY (“don’t repeat yourself”) and DAMP (“descriptive and meaningful phrases”) principles. For this topic, we used a GitHub repository, containing an R package whose different commits illustrate the two principles. In each step we’ll share a commit or diff illustrating the changes made.

The Data Dictionary is a collection of all of the fields, descriptions, and data types found in BatchData services. Powered by Stoplight.

The API Design Management Platform powering the world's leading API first companies. Powered by Stoplight.

Postgres/PostGIS functions for generating SVG documents. - dr-jts/pg_svg

A lightweight service for creating map tiles from Cloud-Optimized GeoTiff

First things first; let’s try to understand what a terrain is. A terrain represents the physical features of an area of land. It includes elevation, slope and the arrangement of the natural features such as mountains, plains and rivers. A terrain influences the natural features such as how the inhabitants of a particular area carry...

Batch processing framework for 'ellmer' chat models. Provides both sequential and parallel processing of chat interactions with features including tool calling and structured data extraction. Enables workflow management through progress tracking and recovery and automatic retry with backoff. Additional quality-of-life features include verbosity (or echo) control and sound notifications. Parallel processing is implemented via the 'future' framework. Includes methods for retrieving progress status, chat texts, and chat objects.

Unsupervised text tokenizer focused on computational efficiency. Wraps the 'YouTokenToMe' library which is an implementation of fast Byte Pair Encoding (BPE) .

A tool to gather, analyze and visualize data from the Bureau of Labor Statistics (BLS) API. Functions include segmentation, geographic analysis and visualization. - keberwein/blscrapeR

Google Summer of Code is a global program focused on bringing more developers into open source software development.

PostgreSQL experts from Crunchy Data share advice, performance tips, and guides on PostGIS Performance

Learn how to build a privacy-preserving Retrieval-Augmented Generation (RAG) workflow in R using Ollama and the ragnar package. Discover step-by-step methods for summarizing health insurance policy documents, automating compliance reporting, and leveraging local LLMs—all within your R environment.

See how to query documents using natural language, LLMs, and R—including dplyr-like filtering on metadata. Plus, learn how to use an LLM to extract structured data for text filtering.