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Averi Perny

Posts and resources by Averi Perny#

cheatsheet

String manipulation with stringr

Manipulate character strings in R with stringr to detect, subset, transform, join, split, and match patterns using regex

Garrett Grolemund, Mine Çetinkaya-Rundel, Averi Perny, Andy Teucher, Ryan Zomorrodi, Curtis Kephart, Elen Le Foll, David Díaz Rodríguez

stringr

cheatsheet

RStudio IDE

Navigate the RStudio IDE’s source editor, pane layout, Git integration, debugging tools, code diagnostics, and keyboard shortcuts

Garrett Grolemund, Mine Çetinkaya-Rundel, Averi Perny, Curtis Kephart, Andy Teucher, David Díaz Rodríguez

rstudio

cheatsheet

rmarkdown

Produce dynamic reports, presentations, and dashboards by weaving R code and Markdown text together in.Rmd files rendered to HTML, PDF, or Word

Mine Çetinkaya-Rundel, Averi Perny, Garrett Grolemund, Andy Teucher, Curtis Kephart, David Díaz Rodríguez

rmarkdown

cheatsheet

REST APIs with plumber

Turn R functions into REST API endpoints using plumber, with filters, parsers, serializers, routing, and Swagger documentation support

Mine Çetinkaya-Rundel, James Blair, Andy Teucher, Curtis Kephart, Averi Perny, David Díaz Rodríguez

plumber

cheatsheet

Package Development

Build R packages using devtools and usethis to set up structure, write and document code with roxygen2, test with testthat, and publish

Mine Çetinkaya-Rundel, Garrett Grolemund, Andy Teucher, Curtis Kephart, Averi Perny, David Díaz Rodríguez

devtools usethis

cheatsheet

Importing data with the tidyverse

Learn about readr, readxl, haven, and googlesheets4

Garrett Grolemund, Mine Çetinkaya-Rundel, Averi Perny, Andy Teucher, Curtis Kephart, Hadley Wickham, David Díaz Rodríguez

readr readxl haven googlesheets4

cheatsheet

Factors with forcats

Work with categorical data in R using forcats to create, inspect, reorder, recode, and collapse factor levels

Mine Çetinkaya-Rundel, Averi Perny, Andy Teucher, Curtis Kephart, Garrett Grolemund, David Díaz Rodríguez

forcats

cheatsheet

Data visualization with ggplot2

Build graphics layer by layer with ggplot2 using the grammar of graphics: data, aesthetics, geoms, stats, scales, coordinates, and themes

Mine Çetinkaya-Rundel, Garrett Grolemund, Averi Perny, Curtis Kephart, Andy Teucher, Thomas Lin Pedersen, David Díaz Rodríguez

ggplot2

cheatsheet

Data transformation with dplyr

Manipulate data frames with dplyr using filter, select, mutate, summarize, join, and group operations in a consistent, pipeable API

Garrett Grolemund, Mine Çetinkaya-Rundel, Averi Perny, Andy Teucher, Curtis Kephart, David Díaz Rodríguez

dplyr

cheatsheet

Data tidying with tidyr

Reshape data to tidy format with tidyr using pivot functions, handle missing values, and split or combine columns

Mine Çetinkaya-Rundel, Garrett Grolemund, Averi Perny, Andy Teucher, Curtis Kephart, David Díaz Rodríguez

tidyr

cheatsheet

Apply functions with purrr

Apply functions over lists and vectors with purrr’s map, map2, and pmap families, and work with reduce, walk, and list manipulation tools

Garrett Grolemund, Mine Çetinkaya-Rundel, Averi Perny, Andy Teucher, Curtis Kephart, Hadley Wickham, Marie-Helene Burle, David Díaz Rodríguez

purrr

cheatsheet

Use Python with R with reticulate

Call Python from R, import modules, source scripts, and pass objects between languages using reticulate with automatic virtual environment management

Edgar Ruiz, Mine Çetinkaya-Rundel, Andy Teucher, Tomasz Kalinowski, Averi Perny, Garrett Grolemund, Curtis Kephart, David Díaz Rodríguez

reticulate

cheatsheet

Shiny for R

Build interactive web apps in R by pairing a reactive UI with a live R server session, and share them via Posit Connect, Posit Connect Cloud, or Shinylive

Mine Çetinkaya-Rundel, Garrett Grolemund, Andy Teucher, Carson Sievert, Averi Perny, Greg Swinehart, Isabella Velásquez, Curtis Kephart, Frank Briody, Edgar Ruiz, David Díaz Rodríguez

Shiny

cheatsheet

Dates and times with lubridate

Parse, manipulate, and perform arithmetic on dates, times, and date-time objects in R using lubridate

Garrett Grolemund, Mine Çetinkaya-Rundel, Andy Teucher, Averi Perny, Curtis Kephart, Mara Averick, Wouter Overmeire, David Díaz Rodríguez

lubridate

blog post

Aug 23, 2021

Cheatsheet Updates

Many RStudio cheatsheets have been updated or reworked based on recent package updates, and we’ve updated the cheatsheet contribution process as well. You’ll also see some small changes to the cheatsheet website reflecting these changes

Averi Perny