R Package Development Cheat Sheet
An R package development reference for structure, DESCRIPTION, namespaces, documentation, tests, examples, checks and releases.
Programming
Frontend, backend, database and software engineering materials.
78 indexed resources
Git and GitHub Cheat Sheet
A Git and GitHub reference for worktrees, staging, commits, branches, merges, remote sync and conflict review.
R Data Visualization Cheat Sheet
An R data visualization reference for ggplot2 mappings, layers, facets, scales, coordinates and export review.
R Data Transformation Cheat Sheet for Filtering and Joins
A Chinese R reference for selecting, filtering, deriving, grouping, summarizing, sorting and joining data while preserving a known data grain.
R Data Import Cheat Sheet for Files, Types and Encoding
A Chinese R data-import reference for delimited text, spreadsheets, JSON and statistical files, with encoding, missing-value and column-type checks.
Base R Cheat Sheet for Vectors, Indexing and Data Frames
A Base R reference sheet covering objects, vectors, indexing, functions, data frames, missing values and basic plotting for learning and everyday analysis scripts.