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Learn how an RStudio Project (.Rproj) sets the working directory to the project root, lets you use relative paths with the here package, and avoids common pitfalls like hard‑coded setwd() calls.
Learn how to diagnose and fix 'cannot allocate vector' errors in R by managing garbage collection, optimizing data structures with data.table, and adjusting memory limits.
Learn how to replace slow base R aggregate() functions with data.table for high-performance grouped summaries on large datasets, including syntax for .SD and key optimization.
When a long-running R session in RStudio is interrupted — for example the R process is killed or the session crashes partway through a large saveRDS or write.csv call — a partially written output file can remain on disk. My understanding is that the RStudio IDE provides no transactional or idempotent write semantics for user code, and no automatic rollback o
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