r-expert

Core R programming skill for all R code, package development, and data science workflows. Use when writing R functions, building packages, using tidyverse (dplyr, ggplot2, purrr), creating Shiny apps, working with R Markdown/Quarto, or doing data analysis—e.g., "write an R function", "refactor this R code", "create a Shiny dashboard", "set up package tests", "debug R errors".

1.55x

Quality

86%

Does it follow best practices?

Impact

92%

1.55x

Average score across 3 eval scenarios

Securityby

Passed

No known issues

Evaluation results

95%

22%

Retail Sales Analysis Script

Tidyverse data pipeline code style

Criteria

Without context

With context

Native pipe operator

100%

Package-qualified calls

100%

Tidyverse for manipulation

100%

snake_case naming

100%

No explicit return

100%

groups drop in summarise

100%

na.rm in aggregations

100%

show_col_types FALSE

30%

50%

readr for CSV import

100%

Line length

100%

readr for CSV export

100%

91%

20%

Internal Data Utilities Package

R package directory structure

Criteria

Without context

With context

DESCRIPTION file exists

100%

NAMESPACE file exists

100%

R/ directory exists

100%

R source files named correctly

100%

tests/testthat/ structure

100%

man/ directory exists

README.Rmd at root

100%

Package-qualified calls in R code

83%

Tidyverse for implementation

50%

70%

snake_case in code

100%

No explicit return statements

100%

Native pipe usage

100%

na.rm in numeric summaries

100%

groups drop

100%

92%

57%

CSV Batch Transformation Pipeline

Safe temporary file handling with withr

Criteria

Without context

With context

withr for temp files

66%

show_col_types FALSE

100%

readr not base R

100%

Package-qualified calls

100%

Tidyverse for transformation

70%

Native pipe operator

100%

snake_case naming

100%

No explicit return

100%

na.rm in aggregations

100%

groups drop in summarise

100%

Line length

100%

Repository: jjjermiah/dotagents
Commit: b74de5e

Evaluated: about 1 month ago
Agent: Claude Code
Model: Claude Sonnet 4.6

Table of Contents

Retail Sales Analysis Script Internal Data Utilities Package CSV Batch Transformation Pipeline

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